Condensed cyclic compound and organic light-emitting device including the same

ABSTRACT

An organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode, the organic layer including an emission layer; a hole transport region between the first electrode and the emission layer; and an electron transport region between the emission layer and the second electrode. At least one of the emission layer and the electron transport region includes a condensed cyclic compound represented by one selected from Formulae 1-1 and 1-2: 
                         
The organic light-emitting device including one or more of the condensed cyclic compounds according to embodiments of the present disclosure may have low driving voltage, high efficiency, high luminance, and long lifespan.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority to and the benefit of Korean PatentApplication No. 10-2015-0036186, filed on Mar. 16, 2015, in the KoreanIntellectual Property Office, the entire disclosure of which isincorporated herein by reference.

BACKGROUND

1. Field

One or more aspects of embodiments of the present disclosure relate to acondensed cyclic compound and an organic light-emitting device includingthe same.

2. Description of the Related Art

Organic light emitting devices are self-emission devices that have wideviewing angles, high contrast ratios, short response times, andexcellent brightness, driving voltage, and response speedcharacteristics, and can produce full-color images.

An organic light-emitting device may include a first electrodepositioned on a substrate, and a hole transport region, an emissionlayer, an electron transport region, and a second electrode, which aresequentially positioned on the first electrode. Holes provided from thefirst electrode may move toward the emission layer through the holetransport region, and electrons provided from the second electrode maymove toward the emission layer through the electron transport region.Carriers (e.g., holes and electrons) are then recombined in the emissionlayer to produce excitons. These excitons change from an excited stateto a ground state, thereby generating light.

SUMMARY

One or more aspects of embodiments of the present disclosure relate to anovel condensed cyclic compound and an organic light-emitting deviceincluding the same.

Additional aspects will be set forth in part in the description whichfollows and, in part, will be apparent from the description, or may belearned by practice of the presented embodiments.

According to an embodiment of the present disclosure, a condensed cycliccompound represented by one selected from Formulae 1-1 and 1-2 isprovided:

wherein in Formulae 1-1 and 1-2,

X₁ and X₂ may be each independently O or S;

L₁₁ to L₁₃ and L₂₁ to L₂₃ may be each independently selected from asubstituted or unsubstituted C₃-C₁₀ cycloalkylene group, a substitutedor unsubstituted C₁-C₁₀ heterocycloalkylene group, a substituted orunsubstituted C₃-C₁₀ cycloalkenylene group, a substituted orunsubstituted C₁-C₁₀ heterocycloalkenylene group, a substituted orunsubstituted C₆-C₆₀ arylene group, a substituted or unsubstitutedC₁-C₆₀ heteroarylene group, a substituted or unsubstituted divalentnon-aromatic condensed polycyclic group, and a substituted orunsubstituted divalent non-aromatic condensed heteropolycyclic group;

a11 to a13 and a21 to a23 may be each independently selected from 0, 1,2 and 3, and when a11 is 2 or more, 2 or more L₁₁(s) may be identical toor different from each other, and when a12 is 2 or more, 2 or moreL₁₂(s) may be identical to or different from each other, and when a13 is2 or more, 2 or more L₁₃(s) may be identical to or different from eachother, and when a21 is 2 or more, 2 or more L₂₁(s) may be identical toor different from each other, and when a22 is 2 or more, 2 or moreL₂₂(s) may be identical to or different from each other, and when a23 is2 or more, 2 or more L₂₃(s) may be identical to or different from eachother;

R₁₁ to R₁₃ and R₂₁ to R₂₃ may be each independently selected fromhydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group,a nitro group, an amino group, an amidino group, a hydrazine group, ahydrazone group, a carboxylic acid group or a salt thereof, a sulfonicacid group or a salt thereof, a phosphoric acid group or a salt thereof,a substituted or unsubstituted C₁-C₆₀ alkyl group, a substituted orunsubstituted C₂-C₆₀ alkenyl group, a substituted or unsubstitutedC₂-C₆₀ alkynyl group, a substituted or unsubstituted C₁-C₆₀ alkoxygroup, a substituted or unsubstituted C₃-C₁₀ cycloalkyl group, asubstituted or unsubstituted C₁-C₁₀ heterocycloalkyl group, asubstituted or unsubstituted C₃-C₁₀ cycloalkenyl group, a substituted orunsubstituted C₁-C₁₀ heterocycloalkenyl group, a substituted orunsubstituted C₆-C₆₀ aryl group, a substituted or unsubstituted C₆-C₆₀aryloxy group, a substituted or unsubstituted C₆-C₆₀ arylthio group, asubstituted or unsubstituted C₁-C₆₀ heteroaryl group, a substituted orunsubstituted monovalent non-aromatic condensed polycyclic group, asubstituted or unsubstituted monovalent non-aromatic condensedheteropolycyclic group, —Si(Q₁)(Q₂)(Q₃), —P(═O)(Q₄)(Q₅), —S(═O)(Q₆), and—S(═O)₂(Q₇);

b11 to b13 and b21 to b23 may be each independently selected from 0, 1,2, and 3, and when b11 is 2 or more, 2 or more R₁₁(s) may be identicalto or different from each other, and when b12 is 2 or more, 2 or moreR₁₂(s) may be identical to or different from each other, and when b13 is2 or more, 2 or more R₁₃(s) may be identical to or different from eachother, and when b21 is 2 or more, 2 or more R₂₁(s) may be identical toor different from each other, and when b22 is 2 or more, 2 or moreR₂₂(s) may be identical to or different from each other, b23 is 2 ormore, 2 or more R₂₃(s) may be identical to or different from each other;and

n12, n13, n22 and n23 may be each independently selected from 0, 1, 2,3, and 4.

The compound represented by Formula 1-1 is neither Compound A norCompound B, and the compound represented by Formula 1-2 is not CompoundD:

At least one substituent of the substituted C₃-C₁₀ cycloalkylene group,substituted C₁-C₁₀ heterocycloalkylene group, substituted C₃-C₁₀cycloalkenylene group, substituted C₁-C₁₀ heterocycloalkenylene group,substituted C₆-C₆₀ arylene group, substituted C₁-C₆₀ heteroarylenegroup, substituted divalent non-aromatic condensed polycyclic group,substituted divalent non-aromatic condensed heteropolycyclic group,substituted C₁-C₆₀ alkyl group, substituted C₂-C₆₀ alkenyl group,substituted C₂-C₆₀ alkynyl group, substituted C₁-C₆₀ alkoxy group,substituted C₃-C₁₀ cycloalkyl group, substituted C₁-C₁₀ heterocycloalkylgroup, substituted C₃-C₁₀ cycloalkenyl group, substituted C₁-C₁₀heterocycloalkenyl group, substituted C₆-C₆₀ aryl group, substitutedC₆-C₆₀ aryloxy group, substituted C₆-C₆₀ arylthio group, substitutedC₁-C₆₀ heteroaryl group, substituted monovalent non-aromatic condensedpolycyclic group, and substituted monovalent non-aromatic condensedheteropolycyclic group may be selected from:

deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine group, a hydrazonegroup, a carboxylic acid group or a salt thereof, a sulfonic acid groupor a salt thereof, a phosphoric acid group or a salt thereof, a C₁-C₆₀alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group, and aC₁-C₆₀ alkoxy group; a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group, aC₂-C₆₀ alkynyl group, and a C₁-C₆₀ alkoxy group, each substituted withat least one selected from deuterium, —F, —Cl, —Br, —I, a hydroxylgroup, a cyano group, a nitro group, an amino group, an amidino group, ahydrazine group, a hydrazone group, a carboxylic acid group or a saltthereof, a sulfonic acid group or a salt thereof, a phosphoric acidgroup or a salt thereof, a C₃-C₁₀ cycloalkyl group, a C₁-C₁₀heterocycloalkyl group, a C₃-C₁₀ cycloalkenyl group, a C₁-C₁₀heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀ aryloxy group, aC₆-C₆₀ arylthio group, a C₁-C₆₀ heteroaryl group, a monovalentnon-aromatic condensed polycyclic group, a monovalent non-aromaticcondensed heteropolycyclic group, —Si(Q₁₁)(Q₁₂)(Q₁₃), —B(Q₁₄)(Q₁₅), and—N(Q₁₆)(Q₁₇);

a C₃-C₁₀ cycloalkyl group, a C₁-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₁-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic condensed heteropolycyclic group;

a C₃-C₁₀ cycloalkyl group, a C₁-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₁-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic condensed heteropolycyclic group, eachsubstituted with at least one selected from deuterium, —F, —Cl, —Br, —I,a hydroxyl group, a cyano group, a nitro group, an amino group, anamidino group, a hydrazine group, a hydrazone group, a carboxylic acidgroup or a salt thereof, a sulfonic acid group or a salt thereof, aphosphoric acid group or a salt thereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀alkenyl group, a C₂-C₆₀ alkynyl group, a C₁-C₆₀ alkoxy group, a C₃-C₁₀cycloalkyl group, a C₁-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenylgroup, a C₁-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀ heteroaryl group, amonovalent non-aromatic condensed polycyclic group, a monovalentnon-aromatic condensed heteropolycyclic group, —Si(Q₂₁)(Q₂₂)(Q₂₃),—B(Q₂₄)(Q₂₅) and —N(Q₂₆)(Q₂₇); and

—Si(Q₃₁)(Q₃₂)(Q₃₃), —B(Q₃₄)(Q₃₅), and —N(Q₃₆)(Q₃₇),

wherein Q₁ to Q₇, Q₁₁ to Q₁₇, Q₂₁ to Q₂₇ and Q₃₁ to Q₃₇ may be eachindependently selected from hydrogen, deuterium, —F, —Cl, —Br, —I, ahydroxyl group, a cyano group, a nitro group, an amino group, an amidinogroup, a hydrazine group, a hydrazone group, a carboxylic acid group ora salt thereof, a sulfonic acid group or a salt thereof, a phosphoricacid group or a salt thereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenylgroup, a C₂-C₆₀ alkynyl group, a C₁-C₆₀ alkoxy group, a C₃-C₁₀cycloalkyl group, a C₁-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenylgroup, a C₁-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic condensed heteropolycyclic group.

According to another embodiment of the present disclosure, provided isan organic light-emitting device including: a first electrode; a secondelectrode facing the first electrode; and an organic layer between thefirst electrode and the second electrode, the organic layer including anemission layer, and at least one selected from the condensed cycliccompounds described above.

BRIEF DESCRIPTION OF THE DRAWINGS

These and/or other aspects will become apparent and more readilyappreciated from the following description of the embodiments, taken inconjunction with the drawing.

The drawing is a schematic view of an organic light-emitting deviceaccording to one or more example embodiments.

DETAILED DESCRIPTION

Reference will now be made in more detail to embodiments, examples ofwhich are illustrated in the accompanying drawing, wherein likereference numerals refer to the like elements throughout. In thisregard, the present embodiments may have different forms and should notbe construed as being limited to the descriptions set forth herein.Accordingly, the embodiments are merely described below, by referring tothe drawing, to explain aspects of the present description. As usedherein, the term “and/or” includes any and all combinations of one ormore of the associated listed items. Expressions such as “at least oneselected from” and “one selected from,” when preceding a list ofelements, modify the entire list of elements and do not modify theindividual elements of the list. Further, the use of “may” whendescribing embodiments of the present disclosure refers to “one or moreembodiments of the present disclosure.”

A condensed cyclic compound according to some embodiments may berepresented by one selected from Formulae 1-1 and 1-2:

In Formulae 1-1 and 1-2,

X₁ and X₂ may be each independently O or S.

L₁₁ to L₁₃ and L₂₁ to L₂₃ in Formulae 1-1 and 1-2 may be eachindependently selected from a substituted or unsubstituted C₃-C₁₀cycloalkylene group, a substituted or unsubstituted C₁-C₁₀heterocycloalkylene group, a substituted or unsubstituted C₃-C₁₀cycloalkenylene group, a substituted or unsubstituted C₁-C₁₀heterocycloalkenylene group, a substituted or unsubstituted C₆-C₆₀arylene group, a substituted or unsubstituted C₁-C₆₀ heteroarylenegroup, a substituted or unsubstituted divalent non-aromatic condensedpolycyclic group, and a substituted or unsubstituted divalentnon-aromatic condensed heteropolycyclic group.

For example, L₁₁ to L₁₃ and L₂₁ to L₂₃ in Formulae 1-1 and 1-2 may beeach independently selected from:

a phenylene group, a pentalenylene group, an indenylene group, anaphthylene group, an azulenylene group, a heptalenylene group, anindacenylene group, an acenaphthylene group, a fluorenylene group, aspiro-fluorenylene group, a benzofluorenylene group, adibenzofluorenylene group, a phenalenylene group, a phenanthrenylenegroup, an anthracenylene group, a fluoranthenylene group, atriphenylenylene group, a pyrenylene group, a chrysenylene group, anaphthacenylene group, a picenylene group, a perylenylene group, apentaphenylene group, a hexacenylene group, a pentacenylene group, arubicenylene group, a coronenylene group, an ovalenylene group, apyrrolylene group, a thiophenylene group, a furanylene group, animidazolylene group, a pyrazolylene group, a thiazolylene group, anisothiazolylene group, an oxazolylene group, an isoxazolylene group, apyridinylene group, a pyrazinylene group, a pyrimidinylene group, apyridazinylene group, an isoindolylene group, an indolylene group, anindazolylene group, a purinylene group, a quinolinylene group, anisoquinolinylene group, a benzoquinolinylene group, a phthalazinylenegroup, a naphthyridinylene group, a quinoxalinylene group, aquinazolinylene group, a cinnolinylene group, a carbazolylene group, aphenanthridinylene group, an acridinylene group, a phenanthrolinylenegroup, a phenazinylene group, a benzoimidazolylene group, abenzofuranylene group, a benzothiophenylene group, anisobenzothiazolylene group, a benzoxazolylene group, anisobenzoxazolylene group, a triazolylene group, a tetrazolylene group,an oxadiazolylene group, a triazinylene group, a dibenzofuranylenegroup, a dibenzothiophenylene group, a benzocarbazolylene group, adibenzocarbazolylene group, a thiadiazolylene group, animidazopyridinylene group, and an imidazopyrimidinylene group,

a phenylene group, a pentalenylene group, an indenylene group, anaphthylene group, an azulenylene group, a heptalenylene group, anindacenylene group, an acenaphthylene group, a fluorenylene group, aspiro-fluorenylene group, a benzofluorenylene group, adibenzofluorenylene group, a phenalenylene group, a phenanthrenylenegroup, an anthracenylene group, a fluoranthenylene group, atriphenylenylene group, a pyrenylene group, a chrysenylene group, anaphthacenylene group, a picenylene group, a perylenylene group, apentaphenylene group, a hexacenylene group, a pentacenylene group, arubicenylene group, a coronenylene group, an ovalenylene group, apyrrolylene group, a thiophenylene group, a furanylene group, animidazolylene group, a pyrazolylene group, a thiazolylene group, anisothiazolylene group, an oxazolylene group, an isoxazolylene group, apyridinylene group, a pyrazinylene group, a pyrimidinylene group, apyridazinylene group, an isoindolylene group, an indolylene group, anindazolylene group, a purinylene group, a quinolinylene group, anisoquinolinylene group, a benzoquinolinylene group, a phthalazinylenegroup, a naphthyridinylene group, a quinoxalinylene group, aquinazolinylene group, a cinnolinylene group, a carbazolylene group, aphenanthridinylene group, an acridinylene group, a phenanthrolinylenegroup, a phenazinylene group, a benzoimidazolylene group, abenzofuranylene group, a benzothiophenylene group, anisobenzothiazolylene group, a benzoxazolylene group, anisobenzoxazolylene group, a triazolylene group, a tetrazolylene group,an oxadiazolylene group, a triazinylene group, a dibenzofuranylenegroup, a dibenzothiophenylene group, a benzocarbazolylene group, adibenzocarbazolylene group, a thiadiazolylene group, animidazopyridinylene group, and an imidazopyrimidinylene group, eachsubstituted with at least one selected from deuterium, —F, —Cl, —Br, —I,a hydroxyl group, a cyano group, a nitro group, an amino group, anamidino group, a hydrazine group, a hydrazone group, a carboxylic acidgroup or a salt thereof, a sulfonic acid group or a salt thereof, aphosphoric acid group or a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀alkoxy group, a cyclopentyl group, a cyclohexyl group, a cycloheptylgroup, a cyclopentenyl group, a cyclohexenyl group, a phenyl group, apentalenyl group, an indenyl group, a naphthyl group, an azulenyl group,a heptalenyl group, an indacenyl group, an acenaphthyl group, afluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, ananthracenyl group, a fluoranthenyl group, a triphenylenyl group, apyrenyl group, a chrysenyl group, a naphthacenyl group, a picenyl group,a perylenyl group, a pentaphenyl group, a hexacenyl group, a pentacenylgroup, a rubicenyl group, a coronenyl group, an ovalenyl group, apyrrolyl group, a thiophenyl group, a furanyl group, an imidazolylgroup, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, anoxazolyl group, an isoxazolyl group, a pyridinyl group, a pyrazinylgroup, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, anindolyl group, an indazolyl group, a purinyl group, a quinolinyl group,an isoquinolinyl group, a benzoquinolinyl group, a phthalazinyl group, anaphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, acinnolinyl group, a carbazolyl group, a phenanthridinyl group, anacridinyl group, a phenanthrolinyl group, a phenazinyl group, abenzoimidazolyl group, a benzofuranyl group, a benzothiophenyl group, anisobenzothiazolyl group, a benzoxazolyl group, an isobenzoxazolyl group,a triazolyl group, a tetrazolyl group, an oxadiazolyl group, a triazinylgroup, a dibenzofuranyl group, a dibenzothiophenyl group, abenzocarbazolyl group, a dibenzocarbazolyl group, a thiadiazolyl group,an imidazopyridinyl group, and an imidazopyrimidinyl group.

In some embodiments, L₁₁ to L₁₃ and L₂₁ to L₂₃ in Formulae 1-1 and 1-2may be each independently represented by one selected from Formulae 3-1to 3-25, but L₁₁ to L₁₃ and L₂₁ to L₂₃ are not limited thereto:

In Formulae 3-1 to 3-25,

Y₁ may be selected from O, S, C(Z₃)(Z₄) and N(Z₅);

Z₁ to Z₅ may be each independently selected from hydrogen, deuterium,—F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, anamino group, an amidino group, a hydrazine group, a hydrazone group, acarboxylic acid group or a salt thereof, a sulfonic acid group or a saltthereof, a phosphoric acid group or a salt thereof, a C₁-C₂₀ alkylgroup, a C₁-C₂₀ alkoxy group, a phenyl group, a naphthyl group, afluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, apyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group,a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, anisoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, acarbazolyl group, and a triazinyl group,

d1 may be an integer selected from 1 to 4, d2 may be an integer selectedfrom 1 to 3, d3 may be an integer selected from 1 to 6, d4 may be aninteger selected from 1 to 8, d5 may be an integer selected from 1 or 2,and * and *′ may each be a binding site to a neighboring atom.

In some embodiments, L₁₁ to L₁₃ and L₂₁ to L₂₃ in Formulae 1-1 and 1-2may be each independently represented by one selected from Formulae 4-1to 4-8, but are not limited thereto:

* and *′ in Formulae 4-1 and 4-8 may each be a binding site to aneighboring atom.

In some embodiments, a11 in Formulae 1-1 and 1-2 indicates the number ofL₁₁(s), and may be selected from 0, 1, 2, and 3. When a11 is 0,*-(L₁₁)_(a11)-*′ is a single bond. When a11 is 2 or more, 2 or moreL₁₁(s) may be identical to or different from each other. Descriptions ofa11, a12, a13, and a21 to a23 in Formulae 1-1 and 1-2 may be understoodby referring to the description of a11 and the structures of Formulae1-1 and 1-2.

In some embodiments, a11 and a21 in Formulae 1-1 and 1-2 may be eachindependently selected from 0, 1, and 2, and a12, a13, a22, and a23 maybe each independently 0 or 1, but embodiments of the present disclosureare not limited thereto.

In some embodiments, a11 and a21 in Formulae 1-1 and 1-2 may be eachindependently selected from 0, 1, and 2, and a12, a13, a22, and a23 mayeach be 0, but embodiments of the present disclosure are not limitedthereto.

R₁₁ to R₁₃ and R₂₁ to R₂₃ in Formulae 1-1 and 1-2 may be eachindependently selected from hydrogen, deuterium, —F, —Cl, —Br, —I, ahydroxyl group, a cyano group, a nitro group, an amino group, an amidinogroup, a hydrazine group, a hydrazone group, a carboxylic acid group ora salt thereof, a sulfonic acid group or a salt thereof, a phosphoricacid group or a salt thereof, a substituted or unsubstituted C₁-C₆₀alkyl group, a substituted or unsubstituted C₂-C₆₀ alkenyl group, asubstituted or unsubstituted C₂-C₆₀ alkynyl group, a substituted orunsubstituted C₁-C₆₀ alkoxy group, a substituted or unsubstituted C₃-C₁₀cycloalkyl group, a substituted or unsubstituted C₁-C₁₀ heterocycloalkylgroup, a substituted or unsubstituted C₃-C₁₀ cycloalkenyl group, asubstituted or unsubstituted C₁-C₁₀ heterocycloalkenyl group, asubstituted or unsubstituted C₆-C₆₀ aryl group, a substituted orunsubstituted C₆-C₆₀ aryloxy group, a substituted or unsubstitutedC₆-C₆₀ arylthio group, a substituted or unsubstituted C₁-C₆₀ heteroarylgroup, a substituted or unsubstituted monovalent non-aromatic condensedpolycyclic group, a substituted or unsubstituted monovalent non-aromaticcondensed heteropolycyclic group, —Si(Q₁)(Q₂)(Q₃), —P(═O)(Q₄)(Q₅),—S(═O)(Q₆), and —S(═O)₂(Q₇).

In some embodiments, R₁₁ to R₁₃ and R₂₁ to R₂₃ in Formulae 1-1 and 1-2may be each independently selected from:

hydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group,a nitro group, an amino group, an amidino group, a hydrazine group, ahydrazone group, a carboxylic acid group or a salt thereof, a sulfonicacid group or a salt thereof, a phosphoric acid group or a salt thereof,a C₁-C₂₀ alkyl group, and a C₁-C₂₀ alkoxy group;

a C₁-C₂₀ alkyl group and a C₁-C₂₀ alkoxy group, each substituted with atleast one selected from deuterium, —F, —Cl, —Br, —I, a hydroxyl group, acyano group, a nitro group, an amino group, an amidino group, ahydrazine group, a hydrazone group, a carboxylic acid group or a saltthereof, a sulfonic acid group or a salt thereof, a phosphoric acidgroup or a salt thereof, a phenyl group, a naphthyl group, a pyridinylgroup, and a pyrimidinyl group;

a phenyl group, a naphthyl group, a fluorenyl group, a phenanthrenylgroup, an anthracenyl group, a fluoranthenyl group, a triphenylenylgroup, a pyrenyl group, a chrysenyl group, a pyrrolyl group, athiophenyl group, a furanyl group, an imidazolyl group, a pyrazolylgroup, a thiazolyl group, an isothiazolyl group, an oxazolyl group, anisoxazolyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinylgroup, a pyridazinyl group, an isoindolyl group, an indolyl group, anindazolyl group, a purinyl group, a quinolinyl group, an isoquinolinylgroup, a benzoquinolinyl group, a phthalazinyl group, a naphthyridinylgroup, a quinoxalinyl group, a quinazolinyl group, a cinnolinyl group, acarbazolyl group, a phenanthrolinyl group, a phenanthridinyl group, abenzoimidazolyl group, a benzofuranyl group, a benzothiophenyl group, anisobenzothiazolyl group, a benzoxazolyl group, an isobenzoxazolyl group,a triazolyl group, a tetrazolyl group, an oxadiazolyl group, a triazinylgroup, a dibenzofuranyl group, a dibenzothiophenyl group, adinaphthofuranyl group, a dinaphthothiophenyl group, a benzocarbazolylgroup, a dibenzocarbazolyl group, an imidazopyridinyl group and animidazopyrimidinyl group;

a phenyl group, a naphthyl group, a fluorenyl group, a phenanthrenylgroup, an anthracenyl group, a fluoranthenyl group, a triphenylenylgroup, a pyrenyl group, a chrysenyl group, a pyrrolyl group, athiophenyl group, a furanyl group, an imidazolyl group, a pyrazolylgroup, a thiazolyl group, an isothiazolyl group, an oxazolyl group, anisoxazolyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinylgroup, a pyridazinyl group, an isoindolyl group, an indolyl group, anindazolyl group, a purinyl group, a quinolinyl group, an isoquinolinylgroup, a benzoquinolinyl group, a phthalazinyl group, a naphthyridinylgroup, a quinoxalinyl group, a quinazolinyl group, a cinnolinyl group, acarbazolyl group, a phenanthrolinyl group, a phenanthridinyl group, abenzoimidazolyl group, a benzofuranyl group, a benzothiophenyl group, anisobenzothiazolyl group, a benzoxazolyl group, an isobenzoxazolyl group,a triazolyl group, a tetrazolyl group, an oxadiazolyl group, a triazinylgroup, a dibenzofuranyl group, a dibenzothiophenyl group, adinaphthofuranyl group, a dinaphthothiophenyl group, a benzocarbazolylgroup, a dibenzocarbazolyl group, an imidazopyridinyl group and animidazopyrimidinyl group, each substituted with at least one selectedfrom deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, anitro group, an amino group, an amidino group, a hydrazine group, ahydrazone group, a carboxylic acid group or a salt thereof, a sulfonicacid group or a salt thereof, a phosphoric acid group or a salt thereof,a C₁-C₂₀ alkyl group, a C₁-C₂₀ alkoxy group, a phenyl group, a naphthylgroup, a fluorenyl group, a phenanthrenyl group, an anthracenyl group, afluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenylgroup, a pyrrolyl group, a thiophenyl group, a furanyl group, animidazolyl group, a pyrazolyl group, a thiazolyl group, an isothiazolylgroup, an oxazolyl group, an isoxazolyl group, a pyridinyl group, apyrazinyl group, a pyrimidinyl group, a pyridazinyl group, an isoindolylgroup, an indolyl group, an indazolyl group, a purinyl group, aquinolinyl group, an isoquinolinyl group, a benzoquinolinyl group, aphthalazinyl group, a naphthyridinyl group, a quinoxalinyl group, aquinazolinyl group, a cinnolinyl group, a carbazolyl group, aphenanthrolinyl group, a phenanthridinyl group, a benzoimidazolyl group,a benzofuranyl group, a benzothiophenyl group, an isobenzothiazolylgroup, a benzoxazolyl group, an isobenzoxazolyl group, a triazolylgroup, a tetrazolyl group, an oxadiazolyl group, a triazinyl group, adibenzofuranyl group, a dibenzothiophenyl group, a dinaphthofuranylgroup, a dinaphthothiophenyl group, a benzocarbazolyl group, adibenzocarbazolyl group, an imidazopyridinyl group, animidazopyrimidinyl group, and —Si(Q₃₁)(Q₃₂)(Q₃₃); and

—Si(Q₁)(Q₂)(Q₃), —P(═O)(Q₄)(Q₅), —S(═O)(Q₆) and —S(═O)₂(Q₇),

where Q₁ to Q₇ and Q₃₁ to Q₃₃ may be each independently selected fromhydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group,a nitro group, an amino group, an amidino group, a hydrazine group, ahydrazone group, a carboxylic acid group or a salt thereof, a sulfonicacid group or a salt thereof, a phosphoric acid group or a salt thereof,a C₁-C₂₀ alkyl group, a C₁-C₂₀ alkoxy group, a phenyl group, a naphthylgroup, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenylgroup, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenylgroup, a pyrenyl group, a chrysenyl group, and a carbazolyl group.

In some embodiments, R₁₁ and R₂₁ in Formulae 1-1 and 1-2 may be eachindependently selected from:

hydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group,a nitro group, an amino group, an amidino group, a hydrazine group, ahydrazone group, a carboxylic acid group or a salt thereof, a sulfonicacid group or a salt thereof, a phosphoric acid group or a salt thereof,a C₁-C₂₀ alkyl group, and a C₁-C₂₀ alkoxy group;

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group, a phenanthrolinyl group, aphenanthridinyl group, a benzofuranyl group, a benzothiophenyl group, adibenzofuranyl group, a dibenzothiophenyl group, a dinaphthofuranylgroup, a dinaphthothiophenyl group, a triazinyl group, a benzocarbazolylgroup, and a dibenzocarbazolyl group; and

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group, a phenanthrolinyl group, aphenanthridinyl group, a benzofuranyl group, a benzothiophenyl group, adibenzofuranyl group, a dibenzothiophenyl group, a dinaphthofuranylgroup, a dinaphthothiophenyl group, a triazinyl group, a benzocarbazolylgroup, and a dibenzocarbazolyl group, each substituted with at least oneselected from deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyanogroup, a nitro group, an amino group, an amidino group, a hydrazinegroup, a hydrazone group, a carboxylic acid group or a salt thereof, asulfonic acid group or a salt thereof, a phosphoric acid group or a saltthereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀ alkoxy group, a phenyl group, anaphthyl group, a fluorenyl group, a spiro-fluorenyl group, abenzofluorenyl group, a dibenzofluorenyl group, a phenanthrenyl group,an anthracenyl group, a pyrenyl group, a chrysenyl group, a pyridinylgroup, a pyrazinyl group, a pyrimidinyl group, a pyridazinyl group, aquinolinyl group, an isoquinolinyl group, a quinoxalinyl group, aquinazolinyl group, a carbazolyl group, a benzofuranyl group, abenzothiophenyl group, a triazinyl group, a benzocarbazolyl group, adibenzocarbazolyl group, and —Si(Q₃₁)(Q₃₂)(Q₃₃); and

—Si(Q₁)(Q₂)(Q₃), —P(═O)(Q₄)(Q₅), —S(═O)(Q₆), and —S(═O)₂(Q₇),

where Q₁ to Q₇ and Q₃₁ to Q₃₃ may be each independently selected fromhydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group,a nitro group, an amino group, an amidino group, a hydrazine group, ahydrazone group, a carboxylic acid group or a salt thereof, a sulfonicacid group or a salt thereof, a phosphoric acid group or a salt thereof,a C₁-C₂₀ alkyl group, a C₁-C₂₀ alkoxy group, a phenyl group, a naphthylgroup, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenylgroup, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenylgroup, a pyrenyl group, a chrysenyl group, a pyridinyl group, apyrazinyl group, a pyrimidinyl group, a pyridazinyl group, a quinolinylgroup, an isoquinolinyl group, a quinoxalinyl group, a quinazolinylgroup, a carbazolyl group, and a triazinyl group.

In some embodiments, R₁₁ and R₂₁ in Formulae 1-1 and 1-2 may be eachindependently selected from hydrogen, deuterium, —F, —Cl, —Br, —I, ahydroxyl group, a cyano group, a nitro group, an amino group, an amidinogroup, a hydrazine group, a hydrazone group, a carboxylic acid group ora salt thereof, a sulfonic acid group or a salt thereof, a phosphoricacid group or a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀ alkoxygroup, and groups represented by one selected from Formulae 5-1 to 5-44,but embodiments of the present disclosure are not limited thereto:

In Formulae 5-1 to 5-44,

Y₃₁ is selected from O, S, C(Z₃₄)(Z₃₅), and N(Z₃₆);

Z₃₁ to Z₃₆ may be each independently selected from:

hydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group,a nitro group, an amino group, an amidino group, a hydrazine group, ahydrazone group, a carboxylic acid group or a salt thereof, a sulfonicacid group or a salt thereof, a phosphoric acid group or a salt thereof,a C₁-C₂₀ alkyl group, and a C₁-C₂₀ alkoxy group;

a C₁-C₂₀ alkyl group and a C₁-C₂₀ alkoxy group, each substituted with atleast one selected from deuterium, —F, —Cl, —Br, —I, a hydroxyl group, acyano group, a nitro group, an amino group, an amidino group, ahydrazine group, a hydrazone group, a carboxylic acid group or a saltthereof, a sulfonic acid group or a salt thereof, and a phosphoric acidgroup or a salt thereof;

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, acarbazolyl group, a benzocarbazolyl group, a dibenzocarbazolyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, an isoindolyl group, an indolyl group, an indazolyl group, apurinyl group, a quinolinyl group, an isoquinolinyl group, abenzoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, acinnolinyl group, a carbazolyl group, a phenanthrolinyl group, abenzoimidazolyl group, a benzofuranyl group, a benzothiophenyl group, anisobenzothiazolyl group, a benzoxazolyl group, an isobenzoxazolyl group,a triazolyl group, a tetrazolyl group, an oxadiazolyl group, a triazinylgroup, a dibenzofuranyl group, a dibenzothiophenyl group, abenzocarbazolyl group, a dibenzocarbazolyl group, an imidazopyridinylgroup, and an imidazopyrimidinyl group;

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, acarbazolyl group, a benzocarbazolyl group, a dibenzocarbazolyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, an isoindolyl group, an indolyl group, an indazolyl group, apurinyl group, a quinolinyl group, an isoquinolinyl group, abenzoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, acinnolinyl group, a carbazolyl group, a phenanthrolinyl group, abenzoimidazolyl group, a benzofuranyl group, a benzothiophenyl group, anisobenzothiazolyl group, a benzoxazolyl group, an isobenzoxazolyl group,a triazolyl group, a tetrazolyl group, an oxadiazolyl group, a triazinylgroup, a dibenzofuranyl group, a dibenzothiophenyl group, abenzocarbazolyl group, a dibenzocarbazolyl group, an imidazopyridinylgroup, and an imidazopyrimidinyl group, each substituted with at leastone selected from deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyanogroup, a nitro group, an amino group, an amidino group, a hydrazinegroup, a hydrazone group, a carboxylic acid group or a salt thereof, asulfonic acid group or a salt thereof, a phosphoric acid group or a saltthereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀ alkoxy group, a phenyl group anda naphthyl group; and

—Si(Q₃₁)(Q₃₂)(Q₃₃),

where Q₄ to Q₇ and Q₃₁ to Q₃₃ may be each independently selected fromhydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group,a nitro group, an amino group, an amidino group, a hydrazine group, ahydrazone group, a carboxylic acid group or a salt thereof, a sulfonicacid group or a salt thereof, a phosphoric acid group or a salt thereof,a C₁-C₂₀ alkyl group, a C₁-C₂₀ alkoxy group, a phenyl group, a naphthylgroup, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenylgroup, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenylgroup, a pyrenyl group, a chrysenyl group, and a carbazolyl group;

e1 may be an integer selected from 1 to 5, e2 may be an integer selectedfrom 1 to 7, e3 may be an integer selected from 1 to 3, e4 may be aninteger selected from 1 to 4, e5 may be an integer selected from 1 and2, e6 may be an integer selected from 1 to 6, e7 may be an integerselected from 1 to 9, and * may be a binding site to a neighboring atom.

For example, Z₃₁ to Z₃₆ in Formulae 5-1 to 5-44 may be eachindependently selected from hydrogen, deuterium, —F, —Cl, —Br, —I, ahydroxyl group, a cyano group, a nitro group, an amino group, an amidinogroup, a hydrazine group, a hydrazone group, a C₁-C₂₀ alkyl group, aC₁-C₂₀ alkoxy group, a phenyl group, a naphthyl group, a fluorenylgroup, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, apyrenyl group, a chrysenyl group, a carbazolyl group, a benzocarbazolylgroup, a dibenzocarbazolyl group, a pyridinyl group, a pyrazinyl group,a pyrimidinyl group, and a pyridazinyl group.

In some embodiments, R₁₁ and R₂₁ may be each independently selected fromhydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group,a nitro group, an amino group, an amidino group, a hydrazine group, ahydrazone group, a carboxylic acid group or a salt thereof, a sulfonicacid group or a salt thereof, a phosphoric acid group or a salt thereof,a C₁-C₂₀ alkyl group, a C₁-C₂₀ alkoxy group, and a group represented byone selected from Formulae 6-1 to 6-42, but embodiments of the presentdisclosure are not limited thereto:

In Formulae 6-1 to 6-42, * may be a binding site to a neighboring atom.

In Formulae 1-1 and 1-2, R₁₂, R₁₃, R₂₂, and R₂₃ may be eachindependently selected from hydrogen, deuterium, —F, —Cl, —Br, —I, ahydroxyl group, a cyano group, a nitro group, an amino group, an amidinogroup, a hydrazine group, a hydrazone group, a carboxylic acid group ora salt thereof, a sulfonic acid group or a salt thereof, a phosphoricacid group or a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀ alkoxygroup, and groups represented by Formulae 7-1 to 7-44, but embodimentsof the present disclosure are not limited thereto:

Z₁₁ to Z₁₆ in Formulae 7-1 to 7-44 may be each independently selectedfrom hydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyanogroup, a hydrazine group, a hydrazone group, a carboxylic acid group ora salt thereof, a sulfonic acid group or a salt thereof, a phosphoricacid group or a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀ alkoxygroup, a phenyl group, a pentalenyl group, an indenyl group, a naphthylgroup, an azulenyl group, a heptalenyl group, an indacenyl group, anacenaphthyl group, a fluorenyl group, a spiro-fluorenyl group, abenzofluorenyl group, a dibenzofluorenyl group, a phenalenyl group, aphenanthrenyl group, an anthracenyl group, a fluoranthenyl group, atriphenylenyl group, a pyrenyl group, a chrysenyl group, a naphthacenylgroup, a picenyl group, a perylenyl group, a pentaphenyl group, ahexacenyl group, a pentacenyl group, a rubicenyl group, a coronenylgroup, an ovalenyl group, a pyrrolyl group, a thiophenyl group, afuranyl group, an imidazolyl group, a pyrazolyl group, a thiazolylgroup, an isothiazolyl group, an oxazolyl group, an isoxazolyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, an isoindolyl group, an indolyl group, an indazolyl group, apurinyl group, a quinolinyl group, an isoquinolinyl group, abenzoquinolinyl group, a phthalazinyl group, a naphthyridinyl group, aquinoxalinyl group, a quinazolinyl group, a cinnolinyl group, acarbazolyl group, phenanthridinyl, acridinyl, phenanthrolinyl,phenazinyl, a benzoimidazolyl group, a benzofuranyl group, abenzothiophenyl group, an isobenzothiazolyl group, a benzoxazolyl group,an isobenzoxazolyl group, a triazolyl group, a tetrazolyl group, anoxadiazolyl group, a triazinyl group, a dibenzofuranyl group, adibenzothiophenyl group, a benzocarbazolyl group, a dibenzocarbazolylgroup, an imidazopyridinyl group and an imidazopyrimidinyl group, and *may be a binding site to a neighboring atom.

For example, R₁₂, R₁₃, R₂₂, and R₂₃ in Formulae 1-1 and 1-2 may be eachindependently selected from hydrogen, deuterium, —F, —Cl, —Br, —I, ahydroxyl group, a cyano group, a nitro group, an amino group, an amidinogroup, a hydrazine group, a hydrazone group, a carboxylic acid group ora salt thereof, a sulfonic acid group or a salt thereof, a phosphoricacid group or a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀ alkoxygroup, a pyridinyl group, a pyrazinyl group, a pyrimidinyl group, apyridazinyl group, an isoindolyl group, an indolyl group, an indazolylgroup, a purinyl group, a quinolinyl group, an isoquinolinyl group, abenzoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, atriazolyl group, and a triazinyl group.

In some embodiments, b11 in Formulae 1-1 and 1-2 indicates the number ofR₁₁(s), and may be 0, 1, 2, and 3. For example, b11 may be 0, 1, and 2.In some embodiments, b1 may be 0 or 1. When b11 is 2 or more, 2 or moreR₁₁(s) may be identical to or different from each other. Descriptions ofb12, b13, and b21 to b23 may be understood by referring to thedescription of b11 and the structures of Formulae 1-1 and 1-2.

In some embodiments, n12 in Formula 1-1 indicates the number of*-[(L₁₂)_(a12)-(R₁₂)_(b12)] and may be selected from 0, 1, 2, and 3. Forexample, n12 may be 0 or 1. In some embodiments, n12 may be 1. When n12is 2 or more, 2 or more *-[(L₁₂)_(a12)-(R₁₂)_(b12)](s) may be identicalto or different from each other.

n13 in Formula 1-1 indicates the number of *-[(L₁₃)_(a13)-(R₁₃)_(b13)],and may be selected from 0, 1, 2, and 3. For example, n13 may be 0 or 1.In some embodiments, n13 may be 1. When n13 is 2 or more, 2 or more*-[(L₁₃)_(a13)-(R₁₃)_(b13)](s) may be identical to or different fromeach other.

n22 in Formula 1-2 indicates the number of *-[(L₂₂)_(a22)-(R₂₂)_(b22)]and may be selected from 0, 1, 2, and 3. For example, n22 may be 0 or 1.In some embodiments, n22 may be 1. When n22 is 2 or more, 2 or more*-[(L₂₂)_(a22)-(R₂₂)_(b22)](s) may be identical to or different fromeach other.

n23 in Formula 1-2 indicates the number of *-[(L₂₃)_(a23)-(R₂₃)_(b23)]and may be selected from 0, 1, 2, and 3. For example, n23 may be 0 or 1.In some embodiments, n23 may be 1. When n23 is 2 or more, 2 or more*-[(L₂₃)_(a23)-(R₂₃)_(b23)](s) may be identical to or different fromeach other.

In some embodiments, the condensed cyclic compound of embodiments of thepresent disclosure may be represented by one selected from Formulae 1-1Aand 1-1B, but the structure thereof is not limited thereto:

Descriptions of L₁₁, a11, R₁₁ to R₁₃, n12 and n13 in Formulae 1-1A and1-1B are the same as described herein.

In some embodiments, the condensed cyclic compound may be represented byone selected from Formulae 1-1C and 1-1 D, but the structure thereof isnot limited thereto:

In Formulae 1-1C and 1-1 D,

L₁₁ may be represented by one selected from Formulae 4-1 to 4-8:

a11 may be selected from 0, 1, and 2, and when a11 is 2, 2 L₁₁(s) may beidentical to or different from each other; and

R₁₁ may be represented by one selected from Formulae 6-1 to 6-42:

where * and *′ in Formulae 4-1 to 4-8 and Formulae 6-1 to 6-42 may eachbe a binding site to a neighboring atom.

The condensed cyclic compound represented by one selected from Formulae1-1 and 1-2 may be one selected from Compounds 1 to 110:

and the compound represented by Formula 1-1 is neither Compound A norCompound B, and the compound represented by Formula 1-2 is not CompoundD:

The condensed cyclic compound represented by Formula 1-1 may have a core

and the condensed cyclic compound represented by Formula 1-2 may includea core

In each of these cores, for example when X₁ and X₂ are each —O—,benzopyran and indole are condensed (e.g., linked and/or fused) to eachother, thereby resulting in a delocalized structure of 17 π-electronscapable of improving electron transport characteristics.

X₁ and X₂ in the cores of Formulae 1-1 and 1-2 may each independently beselected from —O— and —S—, each having two unshared electron pairs.Accordingly, the cores of Formulae 1-1 and 1-2 may each independentlyreceive excess electrons from the unshared electron pairs of X₁ and/orX₂. Thus, the center of the compound represented by any one selectedfrom Formulae 1-1 and 1-2 may be enriched with π-electrons, and thus,π→π* transition and n>π* transitions may be more likely to occur, thusincreasing luminescent efficiency of the condensed cyclic compound.

In some embodiments, the compound represented by Formula 1-1 is neitherCompound A nor Compound B, and the compound represented by Formula 1-2is not Compound D. Accordingly, electron transport characteristics ofthe condensed cyclic compound represented by one selected from Formulae1-1 and 1-2 may be improved, and the organic light-emitting deviceincluding the condensed cyclic compound represented by one selected fromFormulae 1-1 and 1-2 may have higher efficiency and longer lifespan.

The condensed cyclic compound represented by one selected from Formulae1-1 and 1-2 may be synthesized by using (utilizing) any suitable organicsynthesis method generally available in the art of organiclight-emitting devices, and such synthesis methods should be apparent tothose of ordinary skill in the art in view of the embodiments describedherein.

At least one selected from the condensed cyclic compounds represented byone selected from Formulae 1-1 and 1-2 may be used between a pair ofelectrodes of an organic light-emitting device. In some embodiments, thecondensed cyclic compound may be included in an electron transportregion, for example, an electron transport layer. Accordingly, anorganic light-emitting device according to one or more embodiments ofthe present disclosure may include: a first electrode; a secondelectrode facing the first electrode; and an organic layer between thefirst electrode and the second electrode, the organic layer including anemission layer and at least one selected from the condensed cycliccompounds represented by one selected from Formulae 1-1 and 1-2.

The expression “(an organic layer) includes at least one selected fromthe condensed cyclic compounds” used herein may refer to a case in which(an organic layer) includes one or more identical condensed cycliccompounds represented by one selected from Formulae 1-1 and 1-2 and/or acase in which (an organic layer) includes two or more differentcondensed cyclic compounds represented by one selected from Formulae 1-1and 1-2.

For example, the organic layer may include, as the condensed cycliccompound represented by one selected from Formulae 1-1 and 1-2, onlyCompound 1. For example, Compound 1 may be present in an electrontransport layer of an organic light-emitting device. In someembodiments, the organic layer may include, as the condensed cycliccompound represented by one selected from Formulae 1-1 and 1-2, Compound1 and Compound 2. For example, Compound 1 and Compound 2 may both bepresent in the same layer (for example, Compound 1 and Compound 2 mayboth be present in an electron transport layer), or may be present indifferent layers (for example, Compound 1 may be present in an emissionlayer and Compound 2 may be present in an electron transport layer).

In some embodiments, the organic layer includes i) a hole transportregion between the first electrode (e.g., an anode) and the emissionlayer, the hole transport region including at least one selected from ahole injection layer, a hole transport layer, a buffer layer, and anelectron blocking layer, and ii) an electron transport region betweenthe emission layer and the second electrode (e.g., a cathode), theelectron transport region including at least one selected from a holeblocking layer, an electron transport layer, and an electron injectionlayer. The electron transport region may include at least one selectedfrom the condensed cyclic compounds represented by any one selected fromFormulae 1-1 and 1-2. For example, the electron transport region mayinclude the electron transport layer, wherein the electron transportlayer may include at least one selected from the condensed cycliccompounds represented by one selected from Formulae 1-1 and 1-2.

The term “organic layer” used herein may refer to a single layer and/ora plurality of layers positioned between the first electrode and thesecond electrode of an organic light-emitting device. A materialincluded in the “organic layer” is not limited to an organic material.

The drawing is a schematic view of an organic light-emitting device 10according to one or more embodiments of the present disclosure. Theorganic light-emitting device 10 includes a first electrode 110, anorganic layer 150, and a second electrode 190.

Hereinafter, the structure of an organic light-emitting device accordingto one or more embodiments of the present disclosure and a method ofmanufacturing the organic light-emitting device according to one or moreembodiments will be described in connection with the drawing.

In the drawing, a substrate may be additionally placed under the firstelectrode 110 or above the second electrode 190. The substrate may be aglass substrate or transparent plastic substrate, each with excellentmechanical strength, thermal stability, transparency, surfacesmoothness, ease of handling, and/or water-resistance.

The first electrode 110 may be formed by depositing or sputtering amaterial for forming the first electrode on the substrate. When thefirst electrode 110 is an anode, the material for forming the firstelectrode 110 may be selected from materials with a high work functionso as to facilitate hole injection (e.g., make holes be easilyinjected). The first electrode 110 may be a reflective electrode or atransmissive electrode. The material for forming the first electrode 110may be a transparent and/or highly conductive material, and non-limitingexamples of such material include indium tin oxide (ITO), indium zincoxide (IZO), tin oxide (SnO₂), and zinc oxide (ZnO). When the firstelectrode 110 is a semi-transmissive electrode or a reflectiveelectrode, as a material for forming the first electrode, at least oneselected from magnesium (Mg), aluminum (Al), aluminum-lithium (Al—Li),calcium (Ca), magnesium-indium (Mg—In), magnesium-silver (Mg—Ag) may beused.

The first electrode 110 may have a single-layer structure, or amulti-layer structure including two or more layers. For example, thefirst electrode 110 may have a three-layered structure of ITO/Ag/ITO,but the structure of the first electrode 110 is not limited thereto.

The organic layer 150 may be positioned on the first electrode 110. Theorganic layer 150 may include an emission layer.

The organic layer 150 may further include a hole transport regionbetween the first electrode and the emission layer, and an electrontransport region between the emission layer and the second electrode.

The hole transport region may include at least one selected from a holeinjection layer (HIL), a hole transport layer (HTL), a buffer layer, andan electron blocking layer (EBL), and the electron transport region mayinclude at least one selected from a hole blocking layer (HBL), anelectron transport layer (ETL), and an electron injection layer (EIL),but the structures of the hole transport region and the electrontransport region are not limited thereto.

The hole transport region may have a single-layered structure formed ofa single material, a single-layered structure formed of a plurality ofdifferent materials, or a multi-layered structure having a plurality oflayers formed of a plurality of different materials.

For example, the hole transport region may have a single-layeredstructure formed of a plurality of different materials, or a structureof hole injection layer/hole transport layer, a structure of holeinjection layer/hole transport layer/buffer layer, a structure of holeinjection layer/buffer layer, a structure of hole transport layer/bufferlayer, or a structure of hole injection layer/hole transportlayer/electron blocking layer, wherein the layers of each structure aresequentially stacked from the first electrode 110 in this stated order,but the structure of the hole transport region is not limited thereto.

When the hole transport region includes a hole injection layer, the holeinjection layer may be formed on the first electrode 110 by using one ormore suitable methods, such as vacuum deposition, spin coating casting,a Langmuir-Blodgett (LB) method, ink-jet printing, laser-printing,and/or laser-induced thermal imaging.

When the hole injection layer is formed by vacuum deposition, forexample, the vacuum deposition may be performed at a depositiontemperature of about 100° C. to about 500° C., at a vacuum degree ofabout 10⁻⁸ to about 10⁻³ torr, and at a deposition rate of about 0.01 toabout 100 Å/sec, depending on the compound for forming the holeinjection layer to be deposited, and the structure of the hole injectionlayer to be formed.

When the hole injection layer is formed by spin coating, for example,the spin coating may be performed at a coating rate of about 2000 rpm toabout 5000 rpm, and at a temperature of about 80° C. to 200° C.,depending on the compound for forming the hole injection layer to bedeposited, and the structure of the hole injection layer to be formed.

When the hole transport region includes a hole transport layer, the holetransport layer may be formed on the first electrode 110 or the holeinjection layer by using one or more suitable methods, such as vacuumdeposition, spin coating, casting, a LB method, ink-jet printing,laser-printing, and/or laser-induced thermal imaging. When the holetransport layer is formed by vacuum deposition and/or spin coating,deposition and coating conditions for the hole transport layer may besimilar to the deposition and coating conditions for the hole injectionlayer.

The hole transport region may include at least one selected fromm-MTDATA, TDATA, 2-TNATA, NPB, β-NPB, TPD, Spiro-TPD, Spiro-NPB,methylated-NPB, TAPC, HMTPD, 4,4′,4″-tris(N-carbazolyl)triphenylamine(TCTA), polyaniline/dodecylbenzenesulfonic acid (Pani/DBSA),poly(3,4-ethylenedioxythiophene)/poly(4-styrenesulfonate) (PEDOT/PSS),polyaniline/camphor sulfonicacid (Pani/CSA),(polyaniline)/poly(4-styrenesulfonate) (PANI/PSS), a compoundrepresented by Formula 201, and a compound represented by Formula 202:

In Formulae 201 and 202,

L₂₀₁ to L₂₀₅ may be each independently the same (or substantially thesame) as explained herein in connection with L₁ to L₃;

xa1 to xa4 may be each independently selected from 0, 1, 2, and 3;

xa5 may be selected from 1, 2, 3, 4, and 5; and

R₂₀₁ to R₂₀₄ may be each independently selected from a substituted orunsubstituted C₃-C₁₀ cycloalkyl group, a substituted or unsubstitutedC₁-C₁₀ heterocycloalkyl group, a substituted or unsubstituted C₃-C₁₀cycloalkenyl group, a substituted or unsubstituted C₁-C₁₀heterocycloalkenyl group, a substituted or unsubstituted C₆-C₆₀ arylgroup, a substituted or unsubstituted C₆-C₆₀ aryloxy group, asubstituted or unsubstituted C₆-C₆₀ arylthio group, a substituted orunsubstituted C₁-C₆₀ heteroaryl group, a substituted or unsubstitutedmonovalent non-aromatic condensed polycyclic group, and a substituted orunsubstituted monovalent non-aromatic condensed heteropolycyclic group.

In some embodiments, in Formulae 201 and 202,

L₂₀₁ to L₂₀₅ may be each independently selected from:

a phenylene group, a naphthylene group, a fluorenylene group, aspiro-fluorenylene group, a benzofluorenylene group, adibenzofluorenylene group, a phenanthrenylene group, an anthracenylenegroup, a pyrenylene group, a chrysenylene group, a pyridinylene group, apyrazinylene group, a pyrimidinylene group, a pyridazinylene group, aquinolinylene group, an isoquinolinylene group, a quinoxalinylene group,a quinazolinylene group, a carbazolylene group, and a triazinylenegroup; and

a phenylene group, a naphthylene group, a fluorenylene group, aspiro-fluorenylene group, a benzofluorenylene group, adibenzofluorenylene group, a phenanthrenylene group, an anthracenylenegroup, a pyrenylene group, a chrysenylene group, a pyridinylene group, apyrazinylene group, a pyrimidinylene group, a pyridazinylene group, aquinolinylene group, an isoquinolinylene group, a quinoxalinylene group,a quinazolinylene group, a carbazolylene group, and a triazinylenegroup, each substituted with at least one selected from deuterium, —F,—Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an aminogroup, an amidino group, a hydrazine group, a hydrazone group, acarboxylic acid group or a salt thereof, a sulfonic acid group or a saltthereof, a phosphoric acid group or a salt thereof, a C₁-C₂₀ alkylgroup, a C₁-C₂₀ alkoxy group, a phenyl group, a naphthyl group, afluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, apyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group,a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, aquinolinyl group, an isoquinolinyl group, a quinoxalinyl group, aquinazolinyl group, a carbazolyl group, and a triazinyl group;

xa1 to xa4 may be each independently selected from 0, 1, and 2;

xa5 may be selected from 1, 2, and 3;

R₂₀₁ to R₂₀₄ may be each independently selected from:

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group, and a triazinyl group; and

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group, and a triazinyl group, eachsubstituted with at least one selected from deuterium, —F, —Cl, —Br, —I,a hydroxyl group, a cyano group, a nitro group, an amino group, anamidino group, a hydrazine group, a hydrazone group, a carboxylic acidgroup or a salt thereof, a sulfonic acid group or a salt thereof, aphosphoric acid group or a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀alkoxy group, a phenyl group, a naphthyl group, an azulenyl group, afluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, apyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group,a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, anisoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, acarbazolyl group, and a triazinyl group, but embodiments of the presentdisclosure are not limited thereto.

The compound represented by Formula 201 may be represented by Formula201A, but is not limited thereto:

For example, the compound represented by Formula 201 may be representedby Formula 201A-1, but is not limited thereto:

For example, the compound represented by Formula 202 may be representedby Formula 202A, but is not limited thereto:

Regarding Formulae 201A, 201A-1, and 202A, descriptions of L₂₀₁ to L₂₀₃,xa1 to xa3, xa5, and R₂₀₂ to R₂₀₄ are as described above, descriptionsof R₂₁₁ and R₂₁₂ may each independently be the same (or substantiallythe same) as the description of R₂₀₃, and R₂₁₃ to R₂₁₆ may be eachindependently selected from hydrogen, deuterium, —F, —Cl, —Br, —I, ahydroxyl group, a cyano group, a nitro group, an amino group, an amidinogroup, a hydrazine group, a hydrazone group, a carboxylic acid group ora salt thereof, a sulfonic acid group or a salt thereof, a phosphoricacid group or a salt thereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenylgroup, a C₂-C₆₀ alkynyl group, a C₁-C₆₀ alkoxy group, a C₃-C₁₀cycloalkyl group, a C₁-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenylgroup, a C₁-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀ heteroaryl group, amonovalent non-aromatic condensed polycyclic group, and a monovalentnon-aromatic condensed heteropolycyclic group.

For example, in Formulae 201A, 201A-1, and 202A,

L₂₀₁ to L₂₀₃ may be each independently selected from:

a phenylene group, a naphthylene group, a fluorenylene group, aspiro-fluorenylene group, a benzofluorenylene group, adibenzofluorenylene group, a phenanthrenylene group, an anthracenylenegroup, a pyrenylene group, a chrysenylene group, a pyridinylene group, apyrazinylene group, a pyrimidinylene group, a pyridazinylene group, aquinolinylene group, an isoquinolinylene group, a quinoxalinylene group,a quinazolinylene group, a carbazolylene group, and a triazinylenegroup; and

a phenylene group, a naphthylene group, a fluorenylene group, aspiro-fluorenylene group, a benzofluorenylene group, adibenzofluorenylene group, a phenanthrenylene group, an anthracenylenegroup, a pyrenylene group, a chrysenylene group, a pyridinylene group, apyrazinylene group, a pyrimidinylene group, a pyridazinylene group, aquinolinylene group, an isoquinolinylene group, a quinoxalinylene group,a quinazolinylene group, a carbazolylene group, and a triazinylenegroup, each substituted with at least one selected from deuterium, —F,—Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an aminogroup, an amidino group, a hydrazine group, a hydrazone group, acarboxylic acid group or a salt thereof, a sulfonic acid group or a saltthereof, a phosphoric acid group or a salt thereof, a C₁-C₂₀ alkylgroup, a C₁-C₂₀ alkoxy group, a phenyl group, a naphthyl group, afluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, apyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group,a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, anisoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, acarbazolyl group, and a triazinyl group;

xa1 to xa3 may be each independently 0 or 1;

R₂₀₃, R₂₀₄, R₂₁₁, and R₂₁₂ may be each independently selected from:

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group, and a triazinyl group; and

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group, and a triazinyl group, eachsubstituted with at least one selected from deuterium, —F, —Cl, —Br, —I,a hydroxyl group, a cyano group, a nitro group, an amino group, anamidino group, a hydrazine group, a hydrazone group, a carboxylic acidgroup or a salt thereof, a sulfonic acid group or a salt thereof, aphosphoric acid group or a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀alkoxy group, a phenyl group, a naphthyl group, a fluorenyl group, aspiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group,a phenanthrenyl group, an anthracenyl group, a pyrenyl group, achrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinylgroup, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group,a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, and atriazinyl group;

R₂₁₃ and R₂₁₄ may be each independently selected from:

a C₁-C₂₀ alkyl group and a C₁-C₂₀ alkoxy group;

a C₁-C₂₀ alkyl group and a C₁-C₂₀ alkoxy group, each substituted with atleast one selected from deuterium, —F, —Cl, —Br, —I, a hydroxyl group, acyano group, a nitro group, an amino group, an amidino group, ahydrazine group, a hydrazone group, a carboxylic acid group or a saltthereof, a sulfonic acid group or a salt thereof, a phosphoric acidgroup or a salt thereof, a phenyl group, a naphthyl group, a fluorenylgroup, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, apyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group,a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, anisoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, acarbazolyl group, and a triazinyl group;

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group, and a triazinyl group; and

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group and a triazinyl group, eachsubstituted with at least one selected from deuterium, —F, —Cl, —Br, —I,a hydroxyl group, a cyano group, a nitro group, an amino group, anamidino group, a hydrazine group, a hydrazone group, a carboxylic acidgroup or a salt thereof, a sulfonic acid group or a salt thereof, aphosphoric acid group or a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀alkoxy group, a phenyl group, a naphthyl group, a fluorenyl group, aspiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group,a phenanthrenyl group, an anthracenyl group, a pyrenyl group, achrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinylgroup, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group,a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, and atriazinyl group;

R₂₁₅ and R₂₁₆ may be each independently selected from:

hydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group,a nitro group, an amino group, an amidino group, a hydrazine group, ahydrazone group, a carboxylic acid group or a salt thereof, a sulfonicacid group or a salt thereof, a phosphoric acid group or a salt thereof,a C₁-C₂₀ alkyl group, and a C₁-C₂₀ alkoxy group;

a C₁-C₂₀ alkyl group and a C₁-C₂₀ alkoxy group, each substituted with atleast one selected from deuterium, —F, —Cl, —Br, —I, a hydroxyl group, acyano group, a nitro group, an amino group, an amidino group, ahydrazine group, a hydrazone group, a carboxylic acid group or a saltthereof, a sulfonic acid group or a salt thereof, a phosphoric acidgroup or a salt thereof, a phenyl group, a naphthyl group, a fluorenylgroup, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, apyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group,a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, anisoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, acarbazolyl group, and a triazinyl group;

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, and a triazinyl group; and

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group and a triazinyl group, eachsubstituted with at least one selected from deuterium, —F, —Cl, —Br, —I,a hydroxyl group, a cyano group, a nitro group, an amino group, anamidino group, a hydrazine group, a hydrazone group, a carboxylic acidgroup or a salt thereof, a sulfonic acid group or a salt thereof, aphosphoric acid group or a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀alkoxy group, a phenyl group, a naphthyl group, a fluorenyl group, aspiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group,a phenanthrenyl group, an anthracenyl group, a pyrenyl group, achrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinylgroup, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group,a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, and atriazinyl group; and

xa5 may be 1 or 2.

In some embodiments, R₂₁₃ and R₂₁₄ in Formulae 201A, and 201A-1 may bindto each other (e.g., may be coupled to each other) to form a saturatedor unsaturated ring.

The compound represented by Formula 201 and the compound represented byFormula 202 may each independently include at least one selected fromcompounds HT1 to HT20 illustrated below, but are not limited thereto.

A thickness of the hole transport region may be in a range of about 100Å to about 10,000 Å, for example, about 100 Å to about 1,000 Å. When thehole transport region includes a hole injection layer and a holetransport layer, the thickness of the hole injection layer may be in arange of about 100 Å to about 10,000 Å, and for example, about 100 Å toabout 1,000 Å, and the thickness of the hole transport layer may be in arange of about 50 Å to about 2,000 Å, and for example, about 100 Å toabout 1,500 Å. When the thicknesses of the hole transport region, thehole injection layer, and the hole transport layer are within any ofthese ranges, satisfactory hole transporting characteristics may beobtained without a substantial increase in driving voltage.

The hole transport region may further include, in addition to thesematerials, a charge-generation material for the improvement ofconductive properties. The charge-generation material may behomogeneously or unhomogeneously dispersed in the hole transport region.

The charge-generation material may be, for example, a p-dopant. Thep-dopant may be one selected from a quinone derivative, a metal oxide,and a cyano group-containing compound, but embodiments of the presentdisclosure are not limited thereto. Non-limiting examples of thep-dopant include quinone derivatives, such as tetracyanoquinonedimethane(TCNQ) and/or 2,3,5,6-tetrafluoro-tetracyano-1,4-benzoquinonedimethane(F4-TCNQ); metal oxides, such as tungsten oxide and/or molybdenum oxide;and Compound HT-D1 illustrated below.

The hole transport region may further include, in addition to the holeinjection layer and the hole transport layer, at least one selected froma buffer layer and an electron blocking layer. Since the buffer layermay compensate for an optical resonance distance according to awavelength of light emitted from the emission layer, light-emissionefficiency of the formed organic light-emitting device may be improved.For use as a material included in the buffer layer, materials that areincluded in the hole transport region may be used. The electron blockinglayer may prevent injection of electrons from the electron transportregion.

In some embodiments, an emission layer is formed on the first electrode110 or the hole transport region by using one or more suitable methods,such as vacuum deposition, spin coating, casting, a LB method, ink-jetprinting, laser-printing, and/or laser-induced thermal imaging. When theemission layer is formed by vacuum deposition and/or spin coating,deposition and coating conditions for the emission layer may be similarto the deposition and coating conditions for the hole injection layer.

When the organic light-emitting device 10 is a full color organiclight-emitting device, the emission layer may be patterned into a redemission layer, a green emission layer, and/or a blue emission layer,according to a sub pixel. In some embodiments, the emission layer mayhave a stacked structure of a red emission layer, a green emissionlayer, and a blue emission layer, or may include a red-light emissionmaterial, a green-light emission material, and a blue-light emissionmaterial, which are mixed with each other in a single layer, to emitwhite light.

The emission layer may include a host and a dopant. The host may includethe condensed cyclic compound represented by one selected from Formulae1-1 and 1-2.

The dopant may be at least one selected from a phosphorescent dopant anda fluorescent dopant.

For example, the phosphorescent dopant may include an organometalliccompound including one selected from iridium (Ir), platinum (Pt), osmium(Os), titanium (Ti), zirconium (Zr), hafnium (Hf), europium (Eu),terbium (Tb), thulium (Tm), rhodium (Rh), and copper (Cu);

For example, the phosphorescent dopant may include an organometalliccomplex represented by Formula 401:

In Formula 401,

M may be selected from iridium (Ir), platinum (Pt), osmium (Os),titanium (Ti), zirconium (Zr), hafnium (Hf), europium (Eu), terbium(Tb), and thulium (Tm);

X₄₀₁ to X₄₀₄ may be each independently nitrogen (—N—) or carbon (—C—);

A₄₀₁ and A₄₀₂ rings may be each independently selected from asubstituted or unsubstituted benzene, a substituted or unsubstitutednaphthalene, a substituted or unsubstituted fluorene, a substituted orunsubstituted spiro-fluorene, a substituted or unsubstituted indene, asubstituted or unsubstituted pyrrole, a substituted or unsubstitutedthiophene, a substituted or unsubstituted furan, a substituted orunsubstituted imidazole, a substituted or unsubstituted pyrazole, asubstituted or unsubstituted thiazole, a substituted or unsubstitutedisothiazole, a substituted or unsubstituted oxazole, a substituted orunsubstituted isoxazole, a substituted or unsubstituted pyridine, asubstituted or unsubstituted pyrazine, a substituted or unsubstitutedpyrimidine, a substituted or unsubstituted pyridazine, a substituted orunsubstituted quinoline, a substituted or unsubstituted isoquinoline, asubstituted or unsubstituted benzoquinoline, a substituted orunsubstituted quinoxaline, a substituted or unsubstituted quinazoline, asubstituted or unsubstituted carbazole, a substituted or unsubstitutedbenzoimidazole, a substituted or unsubstituted benzofuran, a substitutedor unsubstituted benzothiophene, a substituted or unsubstitutedisobenzothiophene, a substituted or unsubstituted benzoxazole, asubstituted or unsubstituted isobenzoxazole, a substituted orunsubstituted triazole, a substituted or unsubstituted oxadiazole, asubstituted or unsubstituted triazine, a substituted or unsubstituteddibenzofuran, and a substituted or unsubstituted dibenzothiophene; and

at least one substituent of the substituted benzene, substitutednaphthalene, substituted fluorene, substituted spiro-fluorene,substituted indene, substituted pyrrole, substituted thiophene,substituted furan, substituted imidazole, substituted pyrazole,substituted thiazole, substituted isothiazole, substituted oxazole,substituted isoxazole, substituted pyridine, substituted pyrazine,substituted pyrimidine, substituted pyridazine, substituted quinoline,substituted isoquinoline, substituted benzoquinoline, substitutedquinoxaline, substituted quinazoline, substituted carbazole, substitutedbenzoimidazole, substituted benzofuran, substituted benzothiophene,substituted isobenzothiophene, substituted benzoxazole, substitutedisobenzoxazole, substituted triazole, substituted oxadiazole,substituted triazine, substituted dibenzofuran, and substituteddibenzothiophene may be selected from:

deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine group, a hydrazonegroup, a carboxylic acid group or a salt thereof, a sulfonic acid groupor a salt thereof, a phosphoric acid group or a salt thereof, a C₁-C₆₀alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group, and aC₁-C₆₀ alkoxy group;

a C₁-C₆₀ alkyl group, a C₁-C₆₀ alkenyl group, a C₁-C₆₀ alkynyl group,and a C₁-C₆₀ alkoxy group, each substituted with at least one selectedfrom deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, anitro group, an amino group, an amidino group, a hydrazine group, ahydrazone group, a carboxylic acid group or a salt thereof, a sulfonicacid group or a salt thereof, a phosphoric acid group or a salt thereof,a C₃-C₁₀ cycloalkyl group, a C₁-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₁-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,a monovalent non-aromatic condensed heteropolycyclic group,—N(Q₄₀₁)(Q₄₀₂), —Si(Q₄₀₃)(Q₄₀₄)(Q₄₀₅), or —B(Q₄₀₆)(Q₄₀₇);

a C₃-C₁₀ cycloalkyl group, a C₁-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₁-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic heterocondensed polycyclic group;

a C₃-C₁₀ cycloalkyl group, a C₁-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₁-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic heterocondensed polycyclic group, eachsubstituted with at least one selected from deuterium, —F, —Cl, —Br, —I,a hydroxyl group, a cyano group, a nitro group, an amino group, anamidino group, a hydrazine group, a hydrazone group, a carboxylic acidgroup or a salt thereof, a sulfonic acid group or a salt thereof, aphosphoric acid group or a salt thereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀alkenyl group, a C₂-C₆₀ alkynyl group, a C₁-C₆₀ alkoxy group, a C₃-C₁₀cycloalkyl group, a C₁-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenylgroup, a C₁-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀ heteroaryl group, amonovalent non-aromatic condensed polycyclic group, a monovalentnon-aromatic heterocondensed polycyclic group, —N(Q₄₁₁)(Q₄₁₂),—Si(Q₄₁₃)(Q₄₁₄)(Q₄₁₅), and —B(Q₄₁₆)(Q₄₁₇); and

—N(Q₄₂₁)(Q₄₂₂), —Si(Q₄₂₃)(Q₄₂₄)(Q₄₂₅), and —B(Q₄₂₆)(Q₄₂₇);

L₄₀₁ may be an organic ligand;

xc1 may be 1, 2, or 3; and

xc2 may be 0, 1, 2, or 3.

Descriptions of Q₄₀₁ to Q₄₀₇, Q₄₁₁ to Q₄₁₇, and Q₄₂₁ to Q₄₂₇ may beunderstood by referring to the description provided herein in connectionwith Q₁.

L₄₀₁ may be a monovalent, divalent, or trivalent organic ligand. Forexample, L₄₀₁ may be selected from a halogen ligand (for example, Cland/or F), a diketone ligand (for example, acetylacetonate,1,3-diphenyl-1,3-propanedionate, 2,2,6,6-tetramethyl-3,5-heptanedionate,and/or hexafluoroacetonate), a carboxylic acid ligand (for example,picolinate, dimethyl-3-pyrazolecarboxylate, and/or benzoate), a carbonmonooxide ligand, an isonitrile ligand, a cyano ligand, and aphosphorous ligand (for example, phosphine and/or phosphite), but is notlimited thereto.

When A₄₀₁ in Formula 401 has two or more substituents, the substituentsof A₄₀₁ may bind to each other to form a saturated or unsaturated ring.

When A₄₀₂ in Formula 401 has two or more substituents, the substituentsof A₄₀₂ may bind to each other to form a saturated or unsaturated ring.

When xc1 in Formula 401 is two or more, a plurality of ligands

in Formula 401 may be identical to or different from each other. Whenxc1 in Formula 401 is two or more, A₄₀₁ and/or A₄₀₂ of one ligand may berespectively connected to A₄₀₁ and/or A₄₀₂ of other neighboring ligands,either directly (e.g., via a chemical bond) or via a linker (forexample, a C₁-C₅ alkylene group, —N(R′)— (where R′ may be a C₁-C₁₀ alkylgroup or a C₆-C₂₀ aryl group), and/or —C(═O)—) therebetween.

The phosphorescent dopant may include at least one selected fromCompounds PD1 to PD74 below, but is not limited thereto:

In some embodiments, the phosphorescent dopant may include PtOEP:

The fluorescent dopant may include at least one selected from DPVBi,DPAVBi, TBPe, DCM, DCJTB, Coumarin 6, and C545T.

In some embodiments, the fluorescent dopant may include a compoundrepresented by Formula 501 below.

In Formula 501,

Ar₅₀₁ may be selected from a naphthalene, a heptalene, a fluorene, aspiro-fluorene, a benzofluorene, a dibenzofluorene, a phenalene, aphenanthrene, an anthracene, a fluoranthene, a triphenylene, a pyrene, achrysene, a naphthacene, a picene, a perylene, a pentaphene, and anindenoanthracene; and

a naphthalene group, a heptalene group, a fluorene group, aspiro-fluorene group, a benzofluorene group, a dibenzofluorene group, aphenalene group, a phenanthrene group, a anthracene group, afluoranthene group, a triphenylene group, a pyrene group, a chrysenegroup, a naphthacene group, a picene group, a perylene group, apentaphene group, and an indenoanthracene group, each substituted withat least one selected from deuterium, —F, —Cl, —Br, —I, a hydroxylgroup, a cyano group, a nitro group, an amino group, an amidino group, ahydrazine group, a hydrazone group, a carboxylic acid group or a saltthereof, a sulfonic acid group or a salt thereof, a phosphoric acidgroup or a salt thereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group, aC₂-C₆₀ alkynyl group, a C₁-C₆₀ alkoxy, a C₃-C₁₀ cycloalkyl group, aC₁-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenyl group, a C₁-C₁₀heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀ aryloxy, aC₆-C₆₀ arylthio group, a C₁-C₆₀ heteroaryl group, a monovalentnon-aromatic condensed polycyclic group, a monovalent non-aromaticcondensed heteropolycyclic group, and —Si(Q₅₀₁)(Q₅₀₂)(Q₅₀₃) (where Q₅₀₁to Q₅₀₃ are each independently selected from hydrogen, a C₁-C₆₀ alkylgroup, a C₂-C₆₀ alkenyl group, a C₁-C₆₀ aryl group, and a C₁-C₆₀heteroaryl group);

L₅₀₁ to L₅₀₃ may be the same (or substantially the same) as defined inconnection with L₂₀₁;

R₅₀₁ and R₅₀₂ may be each independently selected from:

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group, a triazinyl group, adibenzofuranyl group, and a dibenzothiophenyl group; and

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group, a triazinyl group, adibenzofuranyl group, and a dibenzothiophenyl group, each substitutedwith at least one selected from deuterium, —F, —Cl, —Br, —I, a hydroxylgroup, a cyano group, a nitro group, an amino group, an amidino group, ahydrazine group, a hydrazone group, a carboxylic acid group or a saltthereof, a sulfonic acid group or a salt thereof, a phosphoric acidgroup or a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀ alkoxy group, aphenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group, a triazinyl group, adibenzofuranyl group, and a dibenzothiophenyl group;

xd1 to xd3 may be each independently selected from 0, 1, 2, and 3; and

xd4 may be selected from 1, 2, 3, and 4.

The fluorescent dopant may include at least one selected from CompoundsFD1 to FD9:

An amount of the dopant in the emission layer may be, in general, in arange of about 0.01 to about 15 parts by weight based on 100 parts byweight of the host, but is not limited thereto.

A thickness of the emission layer may be in a range of about 100 Å toabout 1000 Å, for example, about 200 Å to about 600 Å. When thethickness of the emission layer is within this range, excellentlight-emission characteristics may be obtained without a substantialincrease in driving voltage.

An electron transport region may be positioned on the emission layer.

The electron transport region may include at least one selected from ahole blocking layer, an electron transport layer (ETL), and an electroninjection layer, but is not limited thereto.

For example, the electron transport region may include an electrontransport layer alone, or may have a structure of electron transportlayer/electron injection layer or a structure of hole blockinglayer/electron transport layer/electron injection layer, wherein thelayers of each structure are sequentially stacked from the emissionlayer in the stated order, but the structure of the electron transportregion is not limited thereto.

According to one or more embodiments, the organic layer 150 of theorganic light-emitting device includes an electron transport regionbetween the emission layer and the second electrode 190, wherein theelectron transport region may include at least one selected from thecondensed cyclic compounds represented by one selected from Formulae 1-1or 1-2.

The electron transport region may include a hole blocking layer. Whenthe emission layer includes a phosphorescent dopant, the hole blockinglayer may be formed to prevent or reduce the diffusion of excitons orholes into an electron transport layer.

When the electron transport region includes a hole blocking layer, thehole blocking layer may be formed on the emission layer by using one ormore suitable methods, such as vacuum deposition, spin coating casting,a LB method, ink-jet printing, laser-printing, and/or laser-inducedthermal imaging. When the hole blocking layer is formed by vacuumdeposition and/or spin coating, deposition and coating conditions forthe hole blocking layer may be similar to the deposition and coatingconditions for the hole injection layer.

The hole blocking layer may include, for example, at least one selectedfrom BCP and Bphen, but is not limited thereto.

A thickness of the hole blocking layer may be in a range of about 20 Åto about 1000 Å, for example, about 30 Å to about 300 Å. When thethickness of the hole blocking layer is within these ranges, the holeblocking layer may have improved hole blocking ability without asubstantial increase in driving voltage.

The electron transport region may include an electron transport layer.The electron transport layer may be formed on the emission layer or thehole blocking layer by using one or more suitable methods, such asvacuum deposition, spin coating casting, a LB method, ink-jet printing,laser-printing, and/or laser-induced thermal imaging. When an electrontransport layer is formed by vacuum deposition or spin coating,deposition and coating conditions for the electron transport layer maybe similar to the deposition and coating conditions for the holeinjection layer.

The electron transport layer may further include at least one selectedfrom BCP, Bphen, Alq₃, Balq, TAZ, and NTAZ.

In some embodiments, the electron transport layer may include at leastone compound selected from a compound represented by Formula 601 and acompound represented by Formula 602 illustrated below:Ar₆₀₁-[(L₆₀₁)_(xe1)-E₆₀₁]_(xe2)  Formula 601

In Formula 601,

Ar₆₀₁ may be selected from:

a naphthalene, a heptalene, a fluorene, a spiro-fluorene, abenzofluorene, a dibenzofluorene, a phenalene, a phenanthrene, ananthracene, a fluoranthene, a triphenylene, a pyrene, a chrysene, anaphthacene, a picene, a perylene, a pentaphene, and anindenoanthracene;

a naphthalene group, a heptalene group, a fluorene group, aspiro-fluorene group, a benzofluorene group, a dibenzofluorene group, aphenalene group, a phenanthrene group, a anthracene group, afluoranthene group, a triphenylene group, a pyrene group, a chrysenegroup, a naphthacene group, a picene group, a perylene group, apentaphene group, and an indenoanthracene group, each substituted withat least one selected from deuterium, —F, —Cl, —Br, —I, a hydroxylgroup, a cyano group, a nitro group, an amino group, an amidino group, ahydrazine group, a hydrazone group, a carboxylic acid group or a saltthereof, a sulfonic acid group or a salt thereof, a phosphoric acidgroup or a salt thereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group, aC₂-C₆₀ alkynyl group, a C₁-C₆₀ alkoxy, a C₃-C₁₀ cycloalkyl group, aC₁-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenyl group, a C₁-C₁₀heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀ aryloxy, aC₆-C₆₀ arylthio group, a C₁-C₆₀ heteroaryl group, a monovalentnon-aromatic condensed polycyclic group, a monovalent non-aromaticcondensed heteropolycyclic group, and —Si(Q₃₀₁)(Q₃₀₂)(Q₃₀₃) (where Q₃₀₁to Q₃₀₃ are each independently selected from hydrogen, a C₁-C₆₀ alkylgroup, a C₂-C₆₀ alkenyl group, a C₁-C₆₀ aryl group, and a C₁-C₆₀heteroaryl group);

L₆₀₁ may be the same (or substantially the same) as described inconnection with L₂₀₁;

E₆₀₁ may be selected from:

a pyrrolyl group, a thiophenyl group, a furanyl group, an imidazolylgroup, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, anoxazolyl group, an isoxazolyl group, a pyridinyl group, a pyrazinylgroup, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, anindolyl group, an indazolyl group, a furinyl group, a quinolinyl group,an isoquinolinyl group, a benzoquinolinyl group, a phthalazinyl group, anaphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, acinnolinyl group, a carbazolyl group, a phenanthridinyl group, anacridinyl group, a phenanthrolinyl group, a phenazinyl group, abenzoimidazolyl group, a benzofuranyl group, a benzothiophenyl group, anisobenzothiazolyl group, a benzoxazolyl group, an isobenzoxazolyl group,a triazolyl group, a tetrazolyl group, an oxadiazolyl group, a triazinylgroup, a dibenzofuranyl group, a dibenzothiophenyl group, abenzocarbazolyl group, a dibenzocarbazolyl group, a thiadiazolyl group,an imidazopyridinyl group, an imidazopyrimidinyl group; and

a pyrrolyl group, a thiophenyl group, a furanyl group, an imidazolylgroup, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, anoxazolyl group, an isoxazolyl group, a pyridinyl group, a pyrazinylgroup, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, anindolyl group, an indazolyl group, a purinyl group, a quinolinyl group,an isoquinolinyl group, a benzoquinolinyl group, a phthalazinyl group, anaphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, acinnolinyl group, a carbazolyl group, a phenanthridinyl group, anacridinyl group, a phenanthrolinyl group, a phenazinyl group, abenzoimidazolyl group, a benzofuranyl group, a benzothiophenyl group, anisobenzothiazolyl group, a benzoxazolyl group, an isobenzoxazolyl group,a triazolyl group, a tetrazolyl group, an oxadiazolyl group, a triazinylgroup, a dibenzofuranyl group, a dibenzothiophenyl group, abenzocarbazolyl group, a dibenzocarbazolyl group, a thiadiazolyl group,an imidazopyridinyl group, and an imidazopyrimidinyl group, eachsubstituted with at least one selected from deuterium, —F, —Cl, —Br, —I,a hydroxyl group, a cyano group, a nitro group, an amino group, anamidino group, a hydrazine group, a hydrazone group, a carboxylic acidgroup or a salt thereof, a sulfonic acid group or a salt thereof, aphosphoric acid group or a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀alkoxy group, a cyclopentyl group, a cyclohexyl group, a cycloheptylgroup, a cyclopentenyl group, a cyclohexenyl group, a phenyl group, apentalenyl group, an indenyl group, a naphthyl group, an azulenyl group,a heptalenyl group, an indacenyl group, an acenaphthyl group, afluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, ananthracenyl group, a fluoranthenyl group, a triphenylenyl group, apyrenyl group, a chrysenyl group, a naphthacenyl group, a picenyl group,a perylenyl group, a pentaphenyl group, a hexacenyl group, a pentacenylgroup, a rubicenyl group, a coronenyl group, an ovalenyl group, apyrrolyl group, a thiophenyl group, a furanyl group, an imidazolylgroup, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, anoxazolyl group, an isoxazolyl group, a pyridinyl group, a pyrazinylgroup, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, anindolyl group, an indazolyl group, a purinyl group, a quinolinyl group,an isoquinolinyl group, a benzoquinolinyl group, a phthalazinyl group, anaphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, acinnolinyl group, a carbazolyl group, a phenanthridinyl group, anacridinyl group, a phenanthrolinyl group, a phenazinyl group, abenzoimidazolyl group, a benzofuranyl group, a benzothiophenyl group, anisobenzothiazolyl group, a benzoxazolyl group, an isobenzoxazolyl group,a triazolyl group, a tetrazolyl group, an oxadiazolyl group, a triazinylgroup, a dibenzofuranyl group, a dibenzothiophenyl group, abenzocarbazolyl group, a dibenzocarbazolyl group, a thiadiazolyl group,an imidazopyridinyl group, and an imidazopyrimidinyl group;

xe1 may be selected from 0, 1, 2, and 3; and

xe2 may be selected from 1, 2, 3, and 4.

In Formula 602,

X₆₁₁ may be N or C-(L₆₁₁)_(xe611)-R₆₁₁; X₆₁₂ may be N orC-(L₆₁₂)_(xe612)-R₆₁₂; X₆₁₃ may be N or C-(L₆₁₃)_(xe613)-R₆₁₃, and atleast one of X₆₁₁ to X₆₁₃ may be N;

L₆₁₁ to L₆₁₆ may be each independently the same (or substantially thesame) as described in connection with L₂₀₁;

R₆₁₁ to R₆₁₆ may be each independently selected from:

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group, and a triazinyl group; and

a phenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group, and a triazinyl group, eachsubstituted with at least one selected from deuterium, —F, —Cl, —Br, —I,a hydroxyl group, a cyano group, a nitro group, an amino group, anamidino group, a hydrazine group, a hydrazone group, a carboxylic acidgroup or a salt thereof, a sulfonic acid group or a salt thereof, aphosphoric acid group or a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀alkoxy group, a phenyl group, a naphthyl group, a fluorenyl group, aspiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group,a phenanthrenyl group, an anthracenyl group, a pyrenyl group, achrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinylgroup, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group,a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, and atriazinyl group; and

xe611 to xe616 may be each independently selected from 0, 1, 2, and 3.

The compound represented by Formula 601 and the compound represented byFormula 602 may each independently be selected from Compounds ET1 toET15 illustrated below.

A thickness of the electron transport layer may be in a range of about100 Å to about 1000 Å, for example, about 150 Å to about 500 Å. When thethickness of the electron transport layer is within these ranges, theelectron transport layer may have satisfactory electron transportcharacteristics without a substantial increase in driving voltage.

In some embodiments, the electron transport layer may further include,in addition to the materials described above, a metal-containingmaterial.

The metal-containing material may include a Li complex. The Li complexmay include, for example, Compound ET-D1 (lithium quinolate, LiQ) and/orET-D2.

The electron transport region may include an electron injection layerthat facilitates the injection of electrons from the second electrode190.

The electron injection layer may be formed on the electron transportlayer by using one or more suitable methods, such as vacuum deposition,spin coating casting, a LB method, ink-jet printing, laser-printing,and/or laser-induced thermal imaging. When the electron injection layeris formed by vacuum deposition and/or spin coating, deposition andcoating conditions for the electron injection layer may be similar tothe deposition and coating conditions for the hole injection layer.

The electron injection layer may include at least one selected from LiF,NaCl, CsF, Li₂O, BaO, and LiQ.

A thickness of the electron injection layer may be in a range of about 1Å to about 100 Å, about 3 Å to about 90 Å. When the thickness of theelectron injection layer is within these ranges, the electron injectionlayer may have satisfactory electron injection characteristics without asubstantial increase in driving voltage.

The second electrode 190 may be positioned on the organic layer 150having such the above-described structure. The second electrode 190 maybe a cathode that is an electron injection electrode, and in thisregard, a material for forming the second electrode 190 may be amaterial having a low work function, for example, a metal, an alloy, anelectrically conductive compound, or a mixture thereof. Non-limitingexamples of the material for forming the second electrode 190 includelithium (Li), magnesium (Mg), aluminum (Al), aluminum-lithium (Al—Li),calcium (Ca), magnesium-indium (Mg—In), and magnesium-silver (Mg—Ag). Insome embodiments, the material for forming the second electrode 190 maybe ITO and/or IZO. The second electrode 190 may be a reflectiveelectrode, a semi-transmissive electrode, or a transmissive electrode.

Hereinbefore, the organic light-emitting device has been described withreference to the drawing, but embodiments of the present disclosure arenot limited thereto.

A C₁-C₆₀ alkyl group used herein refers to a linear or branchedaliphatic hydrocarbon monovalent group having 1 to 60 carbon atoms, andnon-limiting examples thereof include a methyl group, an ethyl group, apropyl group, an isobutyl group, a sec-butyl group, a ter-butyl group, apentyl group, an iso-amyl group, and a hexyl group. A C₁-C₆₀ alkylenegroup used herein refers to a divalent group having the same structureas the C₁-C₆₀ alkyl group.

A C₁-C₆₀ alkoxy group used herein refers to a monovalent grouprepresented by —OA₁₀₁ (where A₁₀₁ is the C₁-C₆₀ alkyl group), andnon-limiting examples thereof include a methoxy group, an ethoxy group,and an isopropyloxy group.

A C₂-C₆₀ alkenyl group used herein refers to a hydrocarbon group havingat least one carbon-carbon double bond at one or more positions along acarbon chain of the C₂-C₆₀ alkyl group (e.g., in the middle or at eitherterminal end of the C₂-C₆₀ alkyl group), and non-limiting examplesthereof include an ethenyl group, a propenyl group, and a butenyl group.A C₂-C₆₀ alkylene group used herein refers to a divalent group havingthe same structure as the C₂-C₆₀ alkyl group.

A C₂-C₆₀ alkynyl group used herein refers to a hydrocarbon group havingat least one carbon-carbon triple bond at one or more positions along acarbon chain of the C₂-C₆₀ alkyl group (e.g., in the middle or at eitherterminal end of the C₂-C₆₀ alkyl group), and non-limiting examplesthereof include an ethynyl group and a propynyl group. A C₂-C₆₀ alkylenegroup used herein refers to a divalent group having the same structureas the C₂-C₆₀ alkyl group.

A C₃-C₁₀ cycloalkyl group used herein refers to a monovalent hydrocarbonmonocyclic group having 3 to 10 carbon atoms, and non-limiting examplesthereof include a cyclopropyl group, a cyclobutyl group, a cyclopentylgroup, a cyclohexyl group, and a cycloheptyl group. A C₃-C₁₀cycloalkylene group used herein refers to a divalent group having thesame structure as the C₃-C₁₀ cycloalkyl group.

A C₁-C₁₀ heterocycloalkyl group used herein refers to a monovalentmonocyclic group having at least one heteroatom selected from N, O, P,and S as a ring-forming atom and 1 to 10 carbon atoms, and non-limitingexamples thereof include a tetrahydrofuranyl group and atetrahydrothiophenyl group. A C₁-C₁₀ heterocycloalkylene group usedherein refers to a divalent group having the same structure as theC₁-C₁₀ heterocycloalkyl group.

A C₃-C₁₀ cycloalkenyl group used herein refers to a monovalentmonocyclic group that has 3 to 10 carbon atoms, at least one double bondin the ring thereof, and does not have aromaticity, and non-limitingexamples thereof include a cyclopentenyl group, a cyclohexenyl group,and a cycloheptenyl group. A C₃-C₁₀ cycloalkenylene group used hereinrefers to a divalent group having the same structure as the C₃-C₁₀cycloalkenyl group.

A C₁-C₁₀ heterocycloalkenyl group used herein refers to a monovalentmonocyclic group that has at least one heteroatom selected from N, O, P,and S as a ring-forming atom, 1 to 10 carbon atoms, and at least onedouble bond in its ring. Non-limiting examples of the C₁-C₁₀heterocycloalkenyl group include a 2,3-dihydrofuranyl group and a2,3-dihydrothiophenyl group. A C₁-C₁₀ heterocycloalkenylene group usedherein refers to a divalent group having the same structure as theC₁-C₁₀ heterocycloalkenyl group.

A C₆-C₆₀ aryl group used herein refers to a monovalent group having acarbocyclic aromatic system having 6 to 60 carbon atoms, and a C₆-C₆₀arylene group used herein refers to a divalent group having acarbocyclic aromatic system having 6 to 60 carbon atoms. Non-limitingexamples of the C₆-C₆₀ aryl group include a phenyl group, a naphthylgroup, an anthracenyl group, a phenanthrenyl group, a pyrenyl group, anda chrysenyl group. When the C₆-C₆₀ aryl group and/or the C₆-C₆₀ arylenegroup include two or more rings, the rings may be respectively fused(e.g., coupled) to each other.

A C₁-C₆₀ heteroaryl group used herein refers to a monovalent grouphaving a carbocyclic aromatic system that has at least one heteroatomselected from N, O, P, and S as a ring-forming atom, and 1 to 60 carbonatoms. A C₁-C₆₀ heteroarylene group used herein refers to a divalentgroup having a carbocyclic aromatic system that has at least one heteroatom selected from N, O, P, and S as a ring-forming atom, and 1 to 60carbon atoms. Non-limiting examples of the C₁-C₆₀ heteroaryl groupinclude a pyridinyl group, a pyrimidinyl group, a pyrazinyl group, apyridazinyl group, a triazinyl group, a quinolinyl group, and anisoquinolinyl group. When the C₁-C₆₀ heteroaryl group and/or the C₁-C₆₀heteroarylene group include two or more rings, the rings may berespectively fused (e.g., coupled) to each other.

A C₆-C₆₀ aryloxy group used herein refers to a monovalent grouprepresented by —OA₁₀₂ (where A₁₀₂ is the C₆-C₆₀ aryl group), and aC₆-C₆₀ arylthio group used herein refers to a monovalent grouprepresented by —SA₁₀₃ (where A₁₀₃ is the C₆-C₆₀ aryl group).

A monovalent non-aromatic condensed polycyclic group used herein refersto a monovalent group that has two or more rings condensed (e.g.,coupled) to each other, only carbon atoms as ring-forming atoms (forexample, having 8 to 60 carbon atoms), and does not have overallaromaticity. A non-limiting example of the monovalent non-aromaticcondensed polycyclic group is a fluorenyl group. A divalent non-aromaticcondensed polycyclic group used herein refers to a divalent group havingthe same structure as the monovalent non-aromatic condensed polycyclicgroup.

A monovalent non-aromatic condensed heteropolycyclic group used hereinrefers to a monovalent group that has two or more rings condensed (e.g.,coupled) to each other, has at least one heteroatom selected from N, OP, and S as a ring-forming atom, and carbon atoms (for example, having 1to 60 carbon atoms), and does not have overall aromaticity. Anon-limiting example of the monovalent non-aromatic condensedheteropolycyclic group is a carbazolyl group. A divalent non-aromaticcondensed heteropolycyclic group used herein refers to a divalent grouphaving the same structure as the monovalent non-aromatic condensedheteropolycyclic group.

At least one substitutent of the substituted C₃-C₁₀ cycloalkylene group,substituted C₁-C₁₀ heterocycloalkylene group, substituted C₃-C₁₀cycloalkenylene group, substituted C₁-C₁₀ heterocycloalkenylene group,substituted C₆-C₆₀ arylene group, substituted C₁-C₆₀ heteroarylenegroup, substituted divalent non-aromatic condensed polycyclic group,substituted divalent non-aromatic condensed heteropolycyclic group,substituted C₁-C₆₀ alkyl group, substituted C₂-C₆₀ alkenyl group,substituted C₂-C₆₀ alkynyl group, substituted C₁-C₆₀ alkoxy group,substituted C₃-C₁₀ cycloalkyl group, substituted C₁-C₁₀ heterocycloalkylgroup, substituted C₃-C₁₀ cycloalkenyl group, substituted C₁-C₁₀heterocycloalkenyl group, substituted C₆-C₆₀ aryl group, substitutedC₆-C₆₀ aryloxy group, substituted C₆-C₆₀ arylthio group, substitutedC₁-C₆₀ heteroaryl group, substituted monovalent non-aromatic condensedpolycyclic group, and substituted monovalent non-aromatic condensedheteropolycyclic group may be selected from:

a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group,and a C₁-C₆₀ alkoxy group, each substituted with at least one selectedfrom deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, anitro group, an amino group, an amidino group, a hydrazine group, ahydrazone group, a carboxylic acid group or a salt thereof, a sulfonicacid group or a salt thereof, a phosphoric acid group or a salt thereof,a C₃-C₁₀ cycloalkyl group, a C₁-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₁-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,a monovalent non-aromatic condensed heteropolycyclic group,—Si(Q₁₁)(Q₁₂)(Q₁₃), —B(Q₁₄)(Q₁₅), and —N(Q₁₆)(Q₁₇);

a C₃-C₁₀ cycloalkyl group, a C₁-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₁-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic condensed heteropolycyclic group;

a C₃-C₁₀ cycloalkyl group, a C₁-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₁-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic condensed heteropolycyclic group, eachsubstituted with at least one selected from deuterium, —F, —Cl, —Br, —I,a hydroxyl group, a cyano group, a nitro group, an amino group, anamidino group, a hydrazine group, a hydrazone group, a carboxylic acidgroup or a salt thereof, a sulfonic acid group or a salt thereof, aphosphoric acid group or a salt thereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀alkenyl group, a C₂-C₆₀ alkynyl group, a C₁-C₆₀ alkoxy group, a C₃-C₁₀cycloalkyl group, a C₁-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenylgroup, a C₁-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀ heteroaryl group, amonovalent non-aromatic condensed polycyclic group, a monovalentnon-aromatic condensed heteropolycyclic group, —Si(Q₂₁)(Q₂₂)(Q₂₃),—B(Q₂₄)(Q₂₅), and —N(Q₂₆)(Q₂₇); and

—Si(Q₃₁)(Q₃₂)(Q₃₃), —B(Q₃₄)(Q₃₅) and —N(Q₃₆)(Q₃₇),

where Q₁₁ to Q₁₇, Q₂₁ to Q₂₇ and Q₃₁ to Q₃₇ may be each independentlyselected from hydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, acyano group, a nitro group, an amino group, an amidino group, ahydrazine group, a hydrazone group, a carboxylic acid group or a saltthereof, a sulfonic acid group or a salt thereof, a phosphoric acidgroup or a salt thereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group, aC₂-C₆₀ alkynyl group, a C₁-C₆₀ alkoxy group, a C₃-C₁₀ cycloalkyl group,a C₁-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenyl group, a C₁-C₁₀heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₁-C₆₀ heteroarylgroup, a monovalent non-aromatic condensed polycyclic group, and amonovalent non-aromatic condensed heteropolycyclic group.

For example, at least one substitutent of the substituted C₃-C₁₀cycloalkylene group, substituted C₁-C₁₀ heterocycloalkylene group,substituted C₃-C₁₀ cycloalkenylene group, substituted C₁-C₁₀heterocycloalkenylene group, substituted C₆-C₆₀ arylene group,substituted C₁-C₆₀ heteroarylene group, substituted divalentnon-aromatic condensed polycyclic group, substituted divalentnon-aromatic condensed heteropolycyclic group, substituted C₁-C₆₀ alkylgroup, substituted C₂-C₆₀ alkenyl group, substituted C₂-C₆₀ alkynylgroup, substituted C₁-C₆₀ alkoxy group, substituted C₃-C₁₀ cycloalkylgroup, substituted C₁-C₁₀ heterocycloalkyl group, substituted C₃-C₁₀cycloalkenyl group, substituted C₁-C₁₀ heterocycloalkenyl group,substituted C₆-C₆₀ aryl group, substituted C₆-C₆₀ aryloxy group,substituted C₆-C₆₀ arylthio group, substituted C₁-C₆₀ heteroaryl group,substituted monovalent non-aromatic condensed polycyclic group, andsubstituted monovalent non-aromatic condensed heteropolycyclic group maybe selected from:

deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine group, a hydrazonegroup, a carboxylic acid group or a salt thereof, a sulfonic acid groupor a salt thereof, a phosphoric acid group or a salt thereof, a C₁-C₆₀alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group, and aC₁-C₆₀ alkoxy group;

a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynyl group,and a C₁-C₆₀ alkoxy group, each substituted with at least one selectedfrom deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, anitro group, an amino group, an amidino group, a hydrazine group, ahydrazone group, a carboxylic acid group or a salt thereof, a sulfonicacid group or a salt thereof, a phosphoric acid group or a salt thereof,a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, acyclopentenyl group, a cyclohexenyl group, a phenyl group, a pentalenylgroup, an indenyl group, a naphthyl group, an azulenyl group, aheptalenyl group, an indacenyl group, an acenaphthyl group, a fluorenylgroup, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, ananthracenyl group, a fluoranthenyl group, a triphenylenyl group, apyrenyl group, a chrysenyl group, a naphthacenyl group, a picenyl group,a perylenyl group, a pentaphenyl group, a hexacenyl group, a pentacenylgroup, a rubicenyl group, a coronenyl group, an ovalenyl group, apyrrolyl group, a thiophenyl group, a furanyl group, an imidazolylgroup, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, anoxazolyl group, an isoxazolyl group, a pyridinyl group, a pyrazinylgroup, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, anindolyl group, an indazolyl group, a purinyl group, a quinolinyl group,an isoquinolinyl group, a benzoquinolinyl group, a phthalazinyl group, anaphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, acinnolinyl group, a carbazolyl group, a phenanthridinyl group, anacridinyl group, a phenanthrolinyl group, a phenazinyl group, abenzoimidazolyl group, a benzofuranyl group, a benzothiophenyl group, anisobenzothiazolyl group, a benzoxazolyl group, an isobenzoxazolyl group,a triazolyl group, a tetrazolyl group, an oxadiazolyl group, a triazinylgroup, a dibenzofuranyl group, a dibenzothiophenyl group, abenzocarbazolyl group, a dibenzocarbazolyl group, a thiadiazolyl group,an imidazopyridinyl group, an imidazopyrimidinyl group, —N(Q₁₁)(Q₁₂),—B(Q₁₃)(Q₁₄) and —Si(Q₁₅)(Q₁₆)(Q₁₇);

a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, acyclopentenyl group, a cyclohexenyl group, a phenyl group, a pentalenylgroup, an indenyl group, a naphthyl group, an azulenyl group, aheptalenyl group, an indacenyl group, an acenaphthyl group, a fluorenylgroup, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, ananthracenyl group, a fluoranthenyl group, a triphenylenyl group, apyrenyl group, a chrysenyl group, a naphthacenyl group, a picenyl group,a perylenyl group, a pentaphenyl group, a hexacenyl group, a pentacenylgroup, a rubicenyl group, a coronenyl group, an ovalenyl group, apyrrolyl group, a thiophenyl group, a furanyl group, an imidazolylgroup, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, anoxazolyl group, an isoxazolyl group, a pyridinyl group, a pyrazinylgroup, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, anindolyl group, an indazolyl group, a purinyl group, a quinolinyl group,an isoquinolinyl group, a benzoquinolinyl group, a phthalazinyl group, anaphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, acinnolinyl group, a carbazolyl group, a phenanthridinyl group, anacridinyl group, a phenanthrolinyl group, a phenazinyl group, abenzoimidazolyl group, a benzofuranyl group, a benzothiophenyl group, anisobenzothiazolyl group, a benzoxazolyl group, an isobenzoxazolyl group,a triazolyl group, a tetrazolyl group, an oxadiazolyl group, a triazinylgroup, a dibenzofuranyl group, a dibenzothiophenyl group, abenzocarbazolyl group, a dibenzocarbazolyl group, a thiadiazolyl group,an imidazopyridinyl group and an imidazopyrimidinyl group;

a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, acyclopentenyl group, a cyclohexenyl group, a phenyl group, a pentalenylgroup, an indenyl group, a naphthyl group, an azulenyl group, aheptalenyl group, an indacenyl group, an acenaphthyl group, a fluorenylgroup, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, ananthracenyl group, a fluoranthenyl group, a triphenylenyl group, apyrenyl group, a chrysenyl group, a naphthacenyl group, a picenyl group,a perylenyl group, a pentaphenyl group, a hexacenyl group, a pentacenylgroup, a rubicenyl group, a coronenyl group, an ovalenyl group, apyrrolyl group, a thiophenyl group, a furanyl group, an imidazolylgroup, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, anoxazolyl group, an isoxazolyl group, a pyridinyl group, a pyrazinylgroup, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, anindolyl group, an indazolyl group, a purinyl group, a quinolinyl group,an isoquinolinyl group, a benzoquinolinyl group, a phthalazinyl group, anaphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, acinnolinyl group, a carbazolyl group, a phenanthridinyl group, anacridinyl group, a phenanthrolinyl group, a phenazinyl group, abenzoimidazolyl group, a benzofuranyl group, a benzothiophenyl group, anisobenzothiazolyl group, a benzoxazolyl group, an isobenzoxazolyl group,a triazolyl group, a tetrazolyl group, an oxadiazolyl group, a triazinylgroup, a dibenzofuranyl group, a dibenzothiophenyl group, abenzocarbazolyl group, a dibenzocarbazolyl group, a thiadiazolyl group,an imidazopyridinyl group, and an imidazopyrimidinyl group, eachsubstituted with at least one selected from deuterium, —F, —Cl, —Br, —I,a hydroxyl group, a cyano group, a nitro group, an amino group, anamidino group, a hydrazine group, a hydrazone group, a carboxylic acidgroup or a salt thereof, a sulfonic acid group or a salt thereof, aphosphoric acid group or a salt thereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀alkenyl group, a C₂-C₆₀ alkynyl group, a C₁-C₆₀ alkoxy group, acyclopentyl group, a cyclohexyl group, a cycloheptyl group, acyclopentenyl group, a cyclohexenyl group, a phenyl group, a pentalenylgroup, an indenyl group, a naphthyl group, an azulenyl group, aheptalenyl group, an indacenyl group, an acenaphthyl group, a fluorenylgroup, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, ananthracenyl group, a fluoranthenyl group, a triphenylenyl group, apyrenyl group, a chrysenyl group, a naphthacenyl group, a picenyl group,a perylenyl group, a pentaphenyl group, a hexacenyl group, a pentacenylgroup, a rubicenyl group, a coronenyl group, an ovalenyl group, apyrrolyl group, a thiophenyl group, a furanyl group, an imidazolylgroup, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, anoxazolyl group, an isoxazolyl group, a pyridinyl group, a pyrazinylgroup, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, anindolyl group, an indazolyl group, a purinyl group, a quinolinyl group,an isoquinolinyl group, a benzoquinolinyl group, a phthalazinyl group, anaphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, acinnolinyl group, a carbazolyl group, a phenanthridinyl group, anacridinyl group, a phenanthrolinyl group, a phenazinyl group, abenzoimidazolyl group, a benzofuranyl group, a benzothiophenyl group, anisobenzothiazolyl group, a benzoxazolyl group, an isobenzoxazolyl group,a triazolyl group, a tetrazolyl group, an oxadiazolyl group, a triazinylgroup, a dibenzofuranyl group, a dibenzothiophenyl group, abenzocarbazolyl group, a dibenzocarbazolyl group, a thiadiazolyl group,an imidazopyridinyl group, an imidazopyrimidinyl group, —N(Q₂₁)(Q₂₂),—B(Q₂₃)(Q₂₄), and —Si(Q₂₅)(Q₂₆)(Q₂₇); and

—N(Q₃₁)(Q₃₂), —B(Q₃₃)(Q₃₄), and —Si(Q₃₅)(Q₃₆)(Q₃₇),

where Q₁₁ to Q₁₇, Q₂₁ to Q₂₇ and Q₃₁ to Q₃₇ may be each independentlyselected from hydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, acyano group, a nitro group, an amino group, an amidino group, ahydrazine group, a hydrazone group, a carboxylic acid group or a saltthereof, a sulfonic acid group or a salt thereof, a phosphoric acidgroup or a salt thereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group, aC₂-C₆₀ alkynyl group, a C₁-C₆₀ alkoxy group, a cyclopentyl group, acyclohexyl group, a cycloheptyl group, a cyclopentenyl group, acyclohexenyl group, a phenyl group, a pentalenyl group, an indenylgroup, a naphthyl group, an azulenyl group, a heptalenyl group, anindacenyl group, an acenaphthyl group, a fluorenyl group, aspiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group,a phenalenyl group, a phenanthrenyl group, an anthracenyl group, afluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenylgroup, a naphthacenyl group, a picenyl group, a perylenyl group, apentaphenyl group, a hexacenyl group, a pentacenyl group, a rubicenylgroup, a coronenyl group, an ovalenyl group, a pyrrolyl group, athiophenyl group, a furanyl group, an imidazolyl group, a pyrazolylgroup, a thiazolyl group, an isothiazolyl group, an oxazolyl group, anisoxazolyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinylgroup, a pyridazinyl group, an isoindolyl group, an indolyl group, anindazolyl group, a purinyl group, a quinolinyl group, an isoquinolinylgroup, a benzoquinolinyl group, a phthalazinyl group, a naphthyridinylgroup, a quinoxalinyl group, a quinazolinyl group, a cinnolinyl group, acarbazolyl group, a phenanthridinyl group, an acridinyl group, aphenanthrolinyl group, a phenazinyl group, a benzoimidazolyl group, abenzofuranyl group, a benzothiophenyl group, an isobenzothiazolyl group,a benzoxazolyl group, an isobenzoxazolyl group, a triazolyl group, atetrazolyl group, an oxadiazolyl group, a triazinyl group, adibenzofuranyl group, a dibenzothiophenyl group, a benzocarbazolylgroup, a dibenzocarbazolyl group, a thiadiazolyl group, animidazopyridinyl group, and an imidazopyrimidinyl group, but embodimentsof the present disclosure are not limited thereto.

The term “Ph” used herein refers to a phenyl group, the term “Me” usedherein refers to a methyl group, the term “Et” used herein refers to anethyl group, and the term “ter-Bu” or “Bu^(t)” used herein refers to atert-butyl group.

Hereinafter, an organic light-emitting device according to one or moreembodiments of the present disclosure will be described in more detailwith reference to Synthesis Examples and Examples. Here, the phrase “Bwas used instead of A” used in describing Synthesis Examples refers to amolar equivalent of A being identical to a molar equivalent of B.

EXAMPLE Synthesis Example 1: Synthesis of Compound 1

Synthesis of Intermediate I-2

Formic acid (1.21 mL, 32.0 mmol) was added to anhydrous acetate (1.08mL, 11.4 mmol), and then, the resulting mixture was stirred for 10minutes at room temperature. o-ethynylanyline (1.07 g, 9.13 mmol)dissolved in 30 mL of dichloromethane was added thereto, and then, theresult was stirred for 1 hour. A solvent was removed from the resultingmixed solution to obtain Intermediate I-1.

Intermediate I-1 (1.32 g, 9.13 mmol), 1-chloro-4-iodobenzene (1.81 g,7.61 mmol), Et₃N (28 mL), Pd(PPh₃)₂Cl₂ (260 mg, 0.38 mmol), and CuI (76mg, 0.38 mmol) were added thereto, and then, the result was stirred for12 hours at room temperature. The obtained reaction solution wasfiltered via celite, and then, subjected to an extraction process usingan ammonium chloride solution and a chloroform solution. The obtainedsolvent was removed therefrom by evaporation and the residual wasseparation-purified by silicagel column chromatography to obtain 1.10 g(yield of 47%) of Intermediate I-2. The obtained compound was confirmedby LC-MS. C₁₅H₁₀ClNO: M+1 256.0

Synthesis of Intermediate I-3

Intermediate I-2 (4.43 g, 20.0 mmol) and 14 mL of Et₃N were dissolved in20 mL of THF, and then, at a temperature of 0° C., phosphoryl chloride(2.8 mL, 30 mmol) was added dropwise thereto. After one hour ofstirring, the resulting reaction solution was subjected to an extractionprocess using a NaHCO₃ aqueous solution and diethylether. The obtainedsolvent was removed therefrom by evaporation, and the residual wasseparation purified by alumina column chromatography to obtain 2.85 g ofIntermediate I-3 (yield of 50%). The obtained compound was confirmed byLC-MS. C₁₅H₈ClN: M+1 238.0

Synthesis of Intermediate I-4

2-iodophenol (2.20 g, 10.0 mmol), Pd(OAc)₂ (22 mg, 0.10 mmol),Ad₂P_(n)Bu (72 mg, 0.20 mmol), and Cs₂CO₃ (9.77 g, 30.0 mmol) weredissolved in 50 mL of toluene, and then, the resulting mixture wasstirred at a temperature of 100° C. for 10 minutes, and then,Intermediate I-3 (2.37 g, 10.0 mmol) was slowly added dropwise thereto.After one hour of stirring, the resulting reaction solution wassubjected to an extraction process using NaHCO₃ aqueous solution anddiethylether. The obtained solvent was removed therefrom by evaporation,and the residual was separation-purified by silicagel columnchromatography to obtain 2.37 g (yield of 72%) of Intermediate I-4. Theobtained compound was confirmed by LC-MS. C₂₁H₁₂ClNO: M+1 330.1

Synthesis of Compound 1

3.29 g (10.0 mmol) of Intermediate I-4, 1.72 g (10 mmol) of1-naphthaleneboronic acid, 0.46 g (0.5 mmol) of Pd₂(dba)₃, 0.2 g (1.0mmol) of PtBu₃, and 4.89 g (15 mmol) of cesium carbonate were dissolvedin 50 mL of 1,4-dioxane solution, and then, the result was stirred at atemperature of 90° C. for 20 hours. The obtained reaction solution wascooled to room temperature, and then, 40 mL of water was added theretoand an extraction process was performed thereon by using 40 mL ofethylether three times. The collected organic layer was dried by usingmagnesium sulfate, and then, the residual obtained by drying usingsulfate was separation-purified by separation-purified by silicagelcolumn chromatography to obtain 2.87 g (yield of 68%) of Compound 1. Theobtained compound was confirmed by MS/FAB and ¹H NMR. C₃₁H₁₉NO cal.421.15. found 421.14.

Synthesis Example 2: Synthesis of Compound 5

Synthesis of Intermediate I-5

2.40 g (yield of 60%) of Intermediate I-5 was obtained in the same (orsubstantially the same) manner as in synthesis of Intermediate I-2,except that 1-chloro-3-iodobenzene was used instead of1-chloro-4-iodobenzene. The obtained compound was confirmed by LC-MS.C₁₅H₁₀ClNO: M+1 256.0

Synthesis of Intermediate I-6

2.80 g (yield of 59%) of Intermediate I-6 was obtained in the same (orsubstantially the same) manner as in synthesis of Intermediate I-3,except that Intermediate I-5 was used instead of Intermediate I-2. Theobtained compound was confirmed by LC-MS. The obtained compound wasconfirmed by LC-MS. C₁₅H₈ClN: M+1 238.0

Synthesis of Intermediate I-7

2.31 g (yield of 70%) of Intermediate I-7 was obtained in the same (orsubstantially the same) manner as in synthesis of Intermediate I-4,except that Intermediate I-6 was used instead of Intermediate I-3. Theobtained compound was confirmed by LC-MS. The obtained compound wasconfirmed by LC-MS. C₂₁H₁₂ClNO: M+1 330.1

Synthesis of Compound 5

4.11 g (yield of 66%) of Compound 5 was obtained in the same (orsubstantially the same) manner as in synthesis of Compound 1, exceptthat Intermediate I-7 was used instead of Intermediate I-4 andIntermediate A-1 was used instead of 1-naphthaleneboronic acid. Theobtained compound was confirmed by MS/FAB and ¹H NMR. C₄₆H₂₆N₂O cal.622.20. found 622.19.

Synthesis Example 3: Synthesis of Compound 7

4.12 g (yield of 69%) of Compound 7 was obtained in the same (orsubstantially the same) manner as in synthesis of Compound 1, exceptthat Intermediate A-2 was used instead of 1-naphthaleneboronic acid. Theobtained compound was confirmed by MS/FAB and ¹H NMR. C₄₅H₂₇NO cal.597.21. found 597.22.

Synthesis Example 4: Synthesis of Compound 12

Synthesis of Intermediate I-8

3.29 g (10.0 mmol) of Intermediate I-4, 2.56 g (10.0 mmol) ofbis(pinacolato)dibrane, 0.35 g (0.50 mmol) of[1,1′-bis(diphenylphosphino)pherocene]dichloropalladium(II) (hereinafterreferred to as PdCl₂(dppf)₂), and 2.94 g (30.0 mmol) of KOAc weredissolved in 40 ml of DMSO, and then, the resulting mixture was stirredat a temperature of 80° C. for 6 hours. The obtained reaction solutionwas cooled at room temperature, and then, subjected to an extractionprocess three times using 40 mL of water and 40 mL of diethylether. Thecollected organic layer was dried by using magnesium sulfate, and then,the residual obtained by drying using sulfate was separation-purified byseparation-purified by silicagel column chromatography to obtain 2.44 g(yield of 58%) of Intermediate I-8. The obtained compound was confirmedby LC-MS. C₂₇H₂₄BNO₃: M+1 422.2

Synthesis of Compound 12

3.47 g (yield of 66%) of Compound 12 was obtained in the same (orsubstantially the same) manner as in synthesis of Compound 1, exceptthat Intermediate I-8 was used instead of Intermediate I-4, and2-chloro-4,6-diphenyl-1,3,5-triazine was used instead of1-naphthaleneboronic acid. The obtained compound was confirmed by MS/FABand ¹H NMR. C₃₆H₂₂N₄O cal. 526.18. found 526.20.

Synthesis Example 5: Synthesis of Compound 20

3.78 g (yield of 72%) of Compound 20 was obtained in the same (orsubstantially the same) manner as in synthesis of Compound 1, exceptthat Intermediate A-3 was used instead of 1-naphthaleneboronic acid. Theobtained compound was confirmed by MS/FAB and ¹H NMR. C₃₇H₂₃N₃O cal.525.19. found 525.18.

Synthesis Example 6: Synthesis of Compound 54

4.30 g (yield of 65%) of Compound 54 was obtained in the same (orsubstantially the same) manner as in synthesis of Compound 1, exceptthat Intermediate I-9 was used instead of Intermediate I-4 andIntermediate A-4 was used instead of 1-naphthaleneboronic acid. Theobtained compound was confirmed by MS/FAB and ¹H NMR. C₄₈H₂₇N₃O cal.661.22. found 661.23.

Synthesis Example 7: Synthesis of Compound 66

3.29 g (10 mmol) of Intermediate I-4 was dissolved in 40 mL of THF, andthen at a temperature of −78° C., 4 mL (2.5M in Hexane) of normalbutyllithium was added thereto. One hour after, 2.20 g (10 mmol) ofchlorodiphenylphosphine was slowly added dropwise thereto, and theresult was stirred for 3 hours, and then, the temperature was raised toroom temperature. Water was added thereto, and the resultant solutionwas washed three times using 30 mL of ethylacetate (30 mL). The washedethylacetate layer was dried using MgSO₄. After a solvent was removedtherefrom, the residual was dissolved in 25 mL of dichloromethane, and 2mL of hydrogen peroxide was added thereto, followed by stirring at roomtemperature for 20 hours. Next, 20 mL of water was added thereto, and anextraction process was performed thereon three times by using 20 mL ofdichloromethane. The collected organic layer was dried using magnesiumsulfate, and the residual obtained by removing a solvent therefrom byevaporation was separation-purified by silicagel column chromatographyto obtain 3.12 g (yield of 63%) of Compound 66. The obtained compoundwas confirmed by MS/FAB and ¹H NMR. C₃₃H₂₂NO₂P cal. 495.14. found495.15.

¹H NMR and MS/FAB results of the synthesized compounds are shown inTable 1.

Synthesis methods of compounds other than those shown in Table 1 shouldbe apparent to those of ordinary skill in the art of organiclight-emitting devices by referring to the above-described synthesispathways and source materials.

TABLE 1 MS/FAB Compound ¹H NMR (CDCl₃, 400 MHz) found calc. 1 8.11-8.08(m, 1H), 7.80-8.78 (m, 1H), 421.14 421.15 7.76-7.74 (m, 1H), 7.72-7.70(m, 1H), 7.63-7.57 (m, 5H), 7.51 (d,1H), 7.47-7.34 (m, 7H), 7.27-7.23(m, 1H), 7.14-7.11 (m, 1H) 5 8.28-8.26 (m, 1H), 8.21-8.18 (m, 1H),622.19 622.20 8.14-8.12 (m, 2H), 8.01-7.98 (m, 1H), 7.90-7.89 (m,2H),7.84-7.81 (dd, 2H), 7.80-7.73 (m, 3H), 7.62-7.60 (dd, 1H), 7.56-7.52(m, 1H), 7.48-7.35 (m, 9H), 7.31-7.27 (m, 2H), 7.20-7.15 (m, 1H) 78.22-8.27 (m, 1H), 7.84-7.81 (m, 3H), 597.22 597.21 7.80-7.78 (m, 1H),7.75-7.71 (m, 4H), 7.67-7.60 (m, 4H), 7.48-7.7.43 (m, 3H), 7.39-7.27 (m,10H), 7.10-7.05 (m, 1H) 12 8.71-8.68 (m, 4H), 8.59-8.55 (m, 2H), 526.20526.18 8.40-8.37 (m, 2H), 8.20-8.17 (m, 1H), 7.80-7.78 (m, 1H),7.62-7.60 (m, 1H), 7.54-7.51 (m, 4H), 7.45-7.32 (m, 7H) 20 8.83-8.82 (m,2H), 8.51-8.49 (m, 2H), 525.18 525.19 8.22-8.19 (m, 1H), 8.10-8.07 (m,2H), 8.01-7.99 (m, 2H), 7.96 (d, 1H), 7.93-7.90 (m, 2H), 7.83-7.78 (m,2H), 7.62-7.60 (m, 1H), 7.48-7.33 (m, 8H) 54 8.55-8.53 (m, 1H),8.45-8.43 (m, 2H), 661.23 661.22 8.28-8.26 (m, 2H), 7.88-7.86 (m, 1H),7.80-7.78 (m, 1H),7.71-7.62 (m, 5H), 7.53-7.41 (m, 11H), 7.33-7.24 (m,2H), 7.19-7.15 (m, 2H) 66 8.22-8.19 (m, 1H), 7.92-7.88 (m, 2H), 495.15495.14 7.80-7.74 (m, 3H), 7.71-7.65 (m, 4H), 7.62-7.58 (m, 1H),7.52-7.32 (m, 11H)

Example 1

An ITO glass substrate (a product of Corning Inc.) including an ITOlayer, which acts as an ITO anode, having a thickness of 15 Ω/cm² (1200Å) was cut to a size of 50 mm×50 mm×0.7 mm, and sonicated usingisopropyl alcohol and pure water, each for 5 minutes, and then, washedby exposure to ozone for 30 minutes. The resultant ITO glass substratewas mounted on a vacuum deposition apparatus.

2-TNATA was deposited on the ITO anode to form a hole injection layerhaving a thickness of 600 Å, and then, NPB was deposited on the holeinjection layer to form a hole transport layer having a thickness of 300Å. Next, ADN (as a host) and DPAVBi (as a dopant) were codeposited onthe hole transport layer at a weight ratio of 98:2 to form an emissionlayer having a thickness of 300 Å.

Compound 1 was deposited on the emission layer to form an electrontransport layer having a thickness of 300 Å, and LiF was deposited onthe electron transport layer to form an electron injection layer havinga thickness of 10 Å, and Al was deposited on the electron injectionlayer to form a cathode having a thickness of 3000 Å, thereby completingthe manufacture of an organic light-emitting device.

Examples 2 to 7 and Comparative Examples 1 to 3

Organic light-emitting devices were each manufactured in the same (orsubstantially the same) manner as in Example 1, except that in formingan electron transport layer, compounds as shown in Table 2 were usedinstead of Compound 1.

Evaluation Example 1

The driving voltage, current density, luminance, efficiency, and halflifespan of the organic light-emitting devices manufactured according toExamples 1 to 7 and Comparative Examples 1 to 3 were measured by usingKeithley SMU 236 and luminance meter PR650 (Photo Research, Inc.).Evaluation results are shown in Table 2. Half lifespan indicates aperiod of time that lapses until the brightness of the organiclight-emitting device reduces to 50% of initial brightness.

TABLE 2 Half lifespan Electron Driving Current Lumi- Effi- (hr transportvoltage density nance ciency Emission @100 mA/ layer (V) (mA/cm²)(cd/m²) (cd/A) color cm²) Example 1 Compound 1 5.27 50 3,115 6.23 blue235 Example 2 Compound 5 5.33 50 3,315 6.63 blue 287 Example 3 Compound7 5.39 50 3,275 6.55 blue 245 Example 4 Compound 12 5.21 50 3,475 6.95blue 252 Example 5 Compound 20 5.54 50 3,185 6.37 blue 276 Example 6Compound 54 5.52 50 3,240 6.48 blue 305 Example 7 Compound 66 5.41 503,255 6.51 blue 335 Comparative Alq₃ 7.35 50 2,065 4.13 blue 145 Example1 Comparative Compound A 5.63 50 2,505 5.01 blue 130 Example 2Comparative Compound C 6.02 50 2,910 5.82 blue 220 Example 3 Alq₃

Alq₃ Compound A

Compound C

As shown by the results in Table 1, the organic light-emitting devicesmanufactured according to Examples 1 to 7 had lower driving voltage,maintained current density, exhibited higher luminance, higherefficiency, and a longer half lifespan than the organic light-emittingdevices of Comparative Examples 1 to 3.

Accordingly, an organic light-emitting device including one or more ofthe condensed cyclic compounds according to embodiments of the presentdisclosure may have low driving voltage, high efficiency, highluminance, and long lifespan.

It will be understood that the terms, such as “comprises,” “comprising,”“includes”, and/or “including”, when used in this specification, specifythe presence of stated features, integers, steps, operations, elements,and/or components, but do not preclude the presence or addition of oneor more other features, integers, steps, operations, elements,components, and/or groups thereof.

Expressions such as “at least one selected from” and “one selectedfrom,” when preceding a list of elements, modify the entire list ofelements and do not modify the individual elements of the list. Further,the use of “may” when describing embodiments of the present disclosurerefers to “one or more embodiments of the present disclosure.”

In addition, as used herein, the terms “use,” “using,” and “used” may beconsidered synonymous with the terms “utilize,” “utilizing,” and“utilized,” respectively.

As used herein, the term “substantially,” “about,” and similar terms areused as terms of approximation and not as terms of degree, and areintended to account for the inherent deviations in measured orcalculated values that would be recognized by those of ordinary skill inthe art.

Also, any numerical range recited herein is intended to include allsubranges of the same numerical precision subsumed within the recitedrange. For example, a range of “1.0 to 10.0” is intended to include allsubranges between (and including) the recited minimum value of 1.0 andthe recited maximum value of 10.0, that is, having a minimum value equalto or greater than 1.0 and a maximum value equal to or less than 10.0,such as, for example, 2.4 to 7.6. Any maximum numerical limitationrecited herein is intended to include all lower numerical limitationssubsumed therein and any minimum numerical limitation recited in thisspecification is intended to include all higher numerical limitationssubsumed therein. Accordingly, Applicant reserves the right to amendthis specification, including the claims, to expressly recite anysub-range subsumed within the ranges expressly recited herein. All suchranges are intended to be inherently described in this specificationsuch that amending to expressly recite any such subranges would complywith the requirements of 35 U.S.C. § 112(a), and 35 U.S.C. § 132(a).

It should be understood that the example embodiments described thereinshould be considered in a descriptive sense only and not for purposes oflimitation. Descriptions of features or aspects within each embodimentshould typically be considered as available for other similar featuresor aspects in other embodiments included within the spirit and scope ofthe appended claims and equivalents thereof.

What is claimed is:
 1. A condensed cyclic compound represented by oneselected from Formulae 1-1 and 1-2:

wherein in Formulae 1-1 and 1-2, X₁ and X₂ are each independently O orS; L₁₁ to L₁₃ and L₂₁ to L₂₃ are each independently selected from asubstituted or unsubstituted C₃-C₁₀ cycloalkylene group, a substitutedor unsubstituted C₁-C₁₀ heterocycloalkylene group, a substituted orunsubstituted C₃-C₁₀ cycloalkenylene group, a substituted orunsubstituted C₁-C₁₀ heterocycloalkenylene group, a substituted orunsubstituted C₆-C₆₀ arylene group, a substituted or unsubstitutedC₁-C₆₀ heteroarylene group, a substituted or unsubstituted divalentnon-aromatic condensed polycyclic group, and a substituted orunsubstituted divalent non-aromatic condensed heteropolycyclic group;a11 to a13 and a21 to a23 are each independently selected from 0, 1, 2,and 3, and when a11 is 2 or more, 2 or more L₁₁(s) are identical to ordifferent from each other, and when a12 is 2 or more, 2 or more L₁₂(s)are identical to or different from each other, and when a13 is 2 ormore, 2 or more L₁₃(s) are identical to or different from each other,and when a21 is 2 or more, 2 or more L₂₁(s) are identical to ordifferent from each other, and when a22 is 2 or more, 2 or more L₂₂(s)are identical to or different from each other, and when a23 is 2 ormore, 2 or more L₂₃(s) are identical to or different from each other;R₁₁ to R₁₃ and R₂₁ to R₂₃ are each independently selected from hydrogen,deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine group, a hydrazonegroup, a carboxylic acid group or a salt thereof, a sulfonic acid groupor a salt thereof, a phosphoric acid group or a salt thereof, asubstituted or unsubstituted C₁-C₆₀ alkyl group, a substituted orunsubstituted C₂-C₆₀ alkenyl group, a substituted or unsubstitutedC₂-C₆₀ alkynyl group, a substituted or unsubstituted C₁-C₆₀ alkoxygroup, a substituted or unsubstituted C₃-C₁₀ cycloalkyl group, asubstituted or unsubstituted C₁-C₁₀ heterocycloalkyl group, asubstituted or unsubstituted C₃-C₁₀ cycloalkenyl group, a substituted orunsubstituted C₁-C₁₀ heterocycloalkenyl group, a substituted orunsubstituted C₆-C₆₀ aryl group, a substituted or unsubstituted C₆-C₆₀aryloxy group, a substituted or unsubstituted C₆-C₆₀ arylthio group, asubstituted or unsubstituted C₁-C₆₀ heteroaryl group, a substituted orunsubstituted monovalent non-aromatic condensed polycyclic group, asubstituted or unsubstituted monovalent non-aromatic condensedheteropolycyclic group, —Si(Q₁)(Q₂)(Q₃), —P(═O)(Q₄)(Q₅), —S(═O)(Q₆), and—S(═O)₂(Q₇); b11 to b13 and b21 to b23 are each independently selectedfrom 0, 1, 2, and 3, and when b11 is 2 or more, 2 or more R₁₁(s) areidentical to or different from each other, and when b12 is 2 or more, 2or more R₁₂(s) are identical to or different from each other, and whenb13 is 2 or more, 2 or more R₁₃(s) are identical to or different fromeach other, and when b21 is 2 or more, 2 or more R₂₁(s) are identical toor different from each other, and when b22 is 2 or more, 2 or moreR₂₂(s) are identical to or different from each other, and when b23 is 2or more, 2 or more R₂₃(s) are identical to or different from each other;and n12, n13, n22, and n23 are each independently selected from 0, 1, 2,3, and 4, wherein in Formula 1-1, —(R₁₁)_(b11)-(L₁₁)_(a11)- is neitherhydrogen, nor a substituted or an unsubstituted C₁-C₆ alkyl group, noran unsubstituted phenyl group and the compound represented by Formula1-1 is neither Compound A nor Compound B, and wherein in Formula 1-2,-(L₂₁)_(a21)-(R₂₁)_(b21)— is not hydrogen, an unsubstituted phenylgroup, —Cl, an amino group, a substituted or unsubstituted C₁-C₂ alkylgroup, or a substituted or unsubstituted C₁-C₁₀ heterocycloalkyl groupand the compound represented by Formula 1-2 is not Compound D:

and wherein at least one substituent of the substituted C₃-C₁₀cycloalkylene group, substituted C₁-C₁₀ heterocycloalkylene group,substituted C₃-C₁₀ cycloalkenylene group, substituted C₁-C₁₀heterocycloalkenylene group, substituted C₆-C₆₀ arylene group,substituted C₁-C₆₀ heteroarylene group, substituted divalentnon-aromatic condensed polycyclic group, substituted divalentnon-aromatic condensed heteropolycyclic group, substituted C₁-C₆₀ alkylgroup, substituted C₂-C₆₀ alkenyl group, substituted C₂-C₆₀ alkynylgroup, substituted C₁-C₆₀ alkoxy group, substituted C₃-C₁₀ cycloalkylgroup, substituted C₁-C₁₀ heterocycloalkyl group, substituted C₃-C₁₀cycloalkenyl group, substituted C₁-C₁₀ heterocycloalkenyl group,substituted C₆-C₆₀ aryl group, substituted C₆-C₆₀ aryloxy group,substituted C₆-C₆₀ arylthio group, substituted C₁-C₆₀ heteroaryl group,substituted monovalent non-aromatic condensed polycyclic group andsubstituted monovalent non-aromatic condensed heteropolycyclic group isselected from: deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyanogroup, a nitro group, an amino group, an amidino group, a hydrazinegroup, a hydrazone group, a carboxylic acid group or a salt thereof, asulfonic acid group or a salt thereof, a phosphoric acid group or a saltthereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynylgroup, and a C₁-C₆₀ alkoxy group; a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenylgroup, a C₂-C₆₀ alkynyl group, and a C₁-C₆₀ alkoxy group, eachsubstituted with at least one selected from deuterium, —F, —Cl, —Br, —I,a hydroxyl group, a cyano group, a nitro group, an amino group, anamidino group, a hydrazine group, a hydrazone group, a carboxylic acidgroup or a salt thereof, a sulfonic acid group or a salt thereof, aphosphoric acid group or a salt thereof, a C₃-C₁₀ cycloalkyl group, aC₁-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenyl group, a C₁-C₁₀heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀ aryloxy group, aC₆-C₆₀ arylthio group, a C₁-C₆₀ heteroaryl group, a monovalentnon-aromatic condensed polycyclic group, a monovalent non-aromaticcondensed heteropolycyclic group, —Si(Q₁₁)(Q₁₂)(Q₁₃), —B(Q₁₄)(Q₁₅), and—N(Q₁₆)(Q₁₇); a C₃-C₁₀ cycloalkyl group, a C₁-C₁₀ heterocycloalkylgroup, a C₃-C₁₀ cycloalkenyl group, a C₁-C₁₀ heterocycloalkenyl group, aC₆-C₆₀ aryl group, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, aC₁-C₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclicgroup, and a monovalent non-aromatic condensed heteropolycyclic group; aC₃-C₁₀ cycloalkyl group, a C₁-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₁-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic condensed heteropolycyclic group, eachsubstituted with at least one selected from deuterium, —F, —Cl, —Br, —I,a hydroxyl group, a cyano group, a nitro group, an amino group, anamidino group, a hydrazine group, a hydrazone group, a carboxylic acidgroup or a salt thereof, a sulfonic acid group or a salt thereof, aphosphoric acid group or a salt thereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀alkenyl group, a C₂-C₆₀ alkynyl group, a C₁-C₆₀ alkoxy group, a C₃-C₁₀cycloalkyl group, a C₁-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenylgroup, a C₁-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀ heteroaryl group, amonovalent non-aromatic condensed polycyclic group, a monovalentnon-aromatic condensed heteropolycyclic group, —Si(Q₂₁)(Q₂₂)(Q₂₃),—B(Q₂₄)(Q₂₅), and —N(Q₂₆)(Q₂₇); and —Si(Q₃₁)(Q₃₂)(Q₃₃), —B(Q₃₄)(Q₃₅),and —N(Q₃₆)(Q₃₇), wherein Q₁ to Q₇, Q₁₁ to Q₁₇, Q₂₁ to Q₂₇ and Q₃₁ toQ₃₇ are each independently selected from hydrogen, deuterium, —F, —Cl,—Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group,an amidino group, a hydrazine group, a hydrazone group, a carboxylicacid group or a salt thereof, a sulfonic acid group or a salt thereof, aphosphoric acid group or a salt thereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀alkenyl group, a C₂-C₆₀ alkynyl group, a C₁-C₆₀ alkoxy group, a C₃-C₁₀cycloalkyl group, a C₁-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenylgroup, a C₁-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic condensed heteropolycyclic group.
 2. Thecondensed cyclic compound of claim 1, wherein when at least one of a11,a12, a13, a21, a22 and a23 is not 0, L₁₁ to L₁₃ and L₂₁ to L₂₃ are eachindependently selected from: a phenylene group, a pentalenylene group,an indenylene group, a naphthylene group, an azulenylene group, aheptalenylene group, an indacenylene group, an acenaphthylene group, afluorenylene group, a spiro-fluorenylene group, a benzofluorenylenegroup, a dibenzofluorenylene group, a phenalenylene group, aphenanthrenylene group, an anthracenylene group, a fluoranthenylenegroup, a triphenylenylene group, a pyrenylene group, a chrysenylenegroup, a naphthacenylene group, a picenylene group, a perylenylenegroup, a pentaphenylene group, a hexacenylene group, a pentacenylenegroup, a rubicenylene group, a coronenylene group, an ovalenylene group,a pyrrolylene group, a thiophenylene group, a furanylene group, animidazolylene group, a pyrazolylene group, a thiazolylene group, anisothiazolylene group, an oxazolylene group, an isoxazolylene group, apyridinylene group, a pyrazinylene group, a pyrimidinylene group, apyridazinylene group, an isoindolylene group, an indolylene group, anindazolylene group, a purinylene group, a quinolinylene group, anisoquinolinylene group, a benzoquinolinylene group, a phthalazinylenegroup, a naphthyridinylene group, a quinoxalinylene group, aquinazolinylene group, a cinnolinylene group, a carbazolylene group, aphenanthridinylene group, an acridinylene group, a phenanthrolinylenegroup, a phenazinylene group, a benzoimidazolylene group, abenzofuranylene group, a benzothiophenylene group, anisobenzothiazolylene group, a benzoxazolylene group, anisobenzoxazolylene group, a triazolylene group, a tetrazolylene group,an oxadiazolylene group, a triazinylene group, a dibenzofuranylenegroup, a dibenzothiophenylene group, a benzocarbazolylene group, adibenzocarbazolylene group, a thiadiazolylene group, animidazopyridinylene group, and an imidazopyrimidinylene group; aphenylene group, a pentalenylene group, an indenylene group, anaphthylene group, an azulenylene group, a heptalenylene group, anindacenylene group, an acenaphthylene group, a fluorenylene group, aspiro-fluorenylene group, a benzofluorenylene group, adibenzofluorenylene group, a phenalenylene group, a phenanthrenylenegroup, an anthracenylene group, a fluoranthenylene group, atriphenylenylene group, a pyrenylene group, a chrysenylene group, anaphthacenylene group, a picenylene group, a perylenylene group, apentaphenylene group, a hexacenylene group, a pentacenylene group, arubicenylene group, a coronenylene group, an ovalenylene group, apyrrolylene group, a thiophenylene group, a furanylene group, animidazolylene group, a pyrazolylene group, a thiazolylene group, anisothiazolylene group, an oxazolylene group, an isoxazolylene group, apyridinylene group, a pyrazinylene group, a pyrimidinylene group, apyridazinylene group, an isoindolylene group, an indolylene group, anindazolylene group, a purinylene group, a quinolinylene group, anisoquinolinylene group, a benzoquinolinylene group, a phthalazinylenegroup, a naphthyridinylene group, a quinoxalinylene group, aquinazolinylene group, a cinnolinylene group, a carbazolylene group, aphenanthridinylene group, an acridinylene group, a phenanthrolinylenegroup, a phenazinylene group, a benzoimidazolylene group, abenzofuranylene group, a benzothiophenylene group, anisobenzothiazolylene group, a benzoxazolylene group, anisobenzoxazolylene group, a triazolylene group, a tetrazolylene group,an oxadiazolylene group, a triazinylene group, a dibenzofuranylenegroup, a dibenzothiophenylene group, a benzocarbazolylene group, adibenzocarbazolylene group, a thiadiazolylene group, animidazopyridinylene group and an imidazopyrimidinylene group, eachsubstituted with at least one selected from deuterium, —F, —Cl, —Br, —I,a hydroxyl group, a cyano group, a nitro group, an amino group, anamidino group, a hydrazine group, a hydrazone group, a carboxylic acidgroup or a salt thereof, a sulfonic acid group or a salt thereof, aphosphoric acid group or a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀alkoxy group, a cyclopentyl group, a cyclohexyl group, a cycloheptylgroup, a cyclopentenyl group, a cyclohexenyl group, a phenyl group, apentalenyl group, an indenyl group, a naphthyl group, an azulenyl group,a heptalenyl group, an indacenyl group, an acenaphthyl group, afluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenalenyl group, a phenanthrenyl group, ananthracenyl group, a fluoranthenyl group, a triphenylenyl group, apyrenyl group, a chrysenyl group, a naphthacenyl group, a picenyl group,a perylenyl group, a pentaphenyl group, a hexacenyl group, a pentacenylgroup, a rubicenyl group, a coronenyl group, an ovalenyl group, apyrrolyl group, a thiophenyl group, a furanyl group, an imidazolylgroup, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, anoxazolyl group, an isoxazolyl group, a pyridinyl group, a pyrazinylgroup, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, anindolyl group, an indazolyl group, a purinyl group, a quinolinyl group,an isoquinolinyl group, a benzoquinolinyl group, a phthalazinyl group, anaphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, acinnolinyl group, a carbazolyl group, a phenanthridinyl group, anacridinyl group, a phenanthrolinyl group, a phenazinyl group, abenzoimidazolyl group, a benzofuranyl group, a benzothiophenyl group, anisobenzothiazolyl group, a benzoxazolyl group, an isobenzoxazolyl group,a triazolyl group, a tetrazolyl group, an oxadiazolyl group, a triazinylgroup, a dibenzofuranyl group, a dibenzothiophenyl group, abenzocarbazolyl group, a dibenzocarbazolyl group, a thiadiazolyl group,an imidazopyridinyl group, and an imidazopyrimidinyl group.
 3. Thecondensed cyclic compound of claim 1, wherein when at least one of a11,a12, a13, a21, a22 and a23 is not 0, L₁₁ to L₁₃ and L₂₁ to L₂₃ are eachindependently represented by any one selected from Formulae 3-1 to 3-25:

wherein in Formulae 3-1 to 3-25, Y₁ is selected from O, S, C(Z₃)(Z₄),and N(Z₅); Z₁ to Z₅ are each independently selected from hydrogen,deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine group, a hydrazonegroup, a carboxylic acid group or a salt thereof, a sulfonic acid groupor a salt thereof, a phosphoric acid group or a salt thereof, a C₁-C₂₀alkyl group, a C₁-C₂₀ alkoxy group, a phenyl group, a naphthyl group, afluorenyl group, a spiro-fluorenyl group, a benzofluorenyl group, adibenzofluorenyl group, a phenanthrenyl group, an anthracenyl group, apyrenyl group, a chrysenyl group, a pyridinyl group, a pyrazinyl group,a pyrimidinyl group, a pyridazinyl group, a quinolinyl group, anisoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, acarbazolyl group, and a triazinyl group, d1 is an integer selected from1 to 4, d2 an integer selected from 1 to 3, d3 is an integer selectedfrom 1 to 6, d4 is an integer selected from 1 to 8, d5 is 1 or 2, andeach of * and *′ is a binding site to a neighboring atom.
 4. Thecondensed cyclic compound of claim 1, wherein when at least one of a11,a12, a13, a21, a22 and a23 is not 0, L₁₁ to L₁₃ and L₂₁ to L₂₃ are eachindependently represented by any one selected from Formulae 4-1 to 4-8:

wherein each of * and *′ in Formulae 4-1 and 4-8 is a binding site to aneighboring atom.
 5. The condensed cyclic compound of claim 1, whereina11 and a21 are each independently selected from 0, 1, and 2, and a12,a13, a22, and a23 are each independently 0 or
 1. 6. The condensed cycliccompound of claim 1, wherein when at least one of b11, b12, b13, b21,b22 and b23 is not 0, R₁₁ to R₁₃ and R₂₁ to R₂₃ are each independentlyselected from: hydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group,a cyano group, a nitro group, an amino group, an amidino group, ahydrazine group, a hydrazone group, a carboxylic acid group or a saltthereof, a sulfonic acid group or a salt thereof, a phosphoric acidgroup or a salt thereof, a C₁-C₂₀ alkyl group, and a C₁-C₂₀ alkoxygroup; a C₁-C₂₀ alkyl group and a C₁-C₂₀ alkoxy group, each substitutedwith at least one selected from deuterium, —F, —Cl, —Br, —I, a hydroxylgroup, a cyano group, a nitro group, an amino group, an amidino group, ahydrazine group, a hydrazone group, a carboxylic acid group or a saltthereof, a sulfonic acid group or a salt thereof, a phosphoric acidgroup or a salt thereof, a phenyl group, a naphthyl group, a pyridinylgroup, and a pyrimidinyl group; a phenyl group, a naphthyl group, afluorenyl group, a phenanthrenyl group, an anthracenyl group, afluoranthenyl group, a triphenylenyl group, a pyrenyl group, a chrysenylgroup, a pyrrolyl group, a thiophenyl group, a furanyl group, animidazolyl group, a pyrazolyl group, a thiazolyl group, an isothiazolylgroup, an oxazolyl group, an isoxazolyl group, a pyridinyl group, apyrazinyl group, a pyrimidinyl group, a pyridazinyl group, an isoindolylgroup, an indolyl group, an indazolyl group, a purinyl group, aquinolinyl group, an isoquinolinyl group, a benzoquinolinyl group, aphthalazinyl group, a naphthyridinyl group, a quinoxalinyl group, aquinazolinyl group, a cinnolinyl group, a carbazolyl group, aphenanthrolinyl group, a phenanthridinyl group, a benzoimidazolyl group,a benzofuranyl group, a benzothiophenyl group, an isobenzothiazolylgroup, a benzoxazolyl group, an isobenzoxazolyl group, a triazolylgroup, a tetrazolyl group, an oxadiazolyl group, a triazinyl group, adibenzofuranyl group, a dibenzothiophenyl group, a dinaphthofuranylgroup, a dinaphthothiophenyl group, a benzocarbazolyl group, adibenzocarbazolyl group, an imidazopyridinyl group and animidazopyrimidinyl group; a phenyl group, a naphthyl group, a fluorenylgroup, a phenanthrenyl group, an anthracenyl group, a fluoranthenylgroup, a triphenylenyl group, a pyrenyl group, a chrysenyl group, apyrrolyl group, a thiophenyl group, a furanyl group, an imidazolylgroup, a pyrazolyl group, a thiazolyl group, an isothiazolyl group, anoxazolyl group, an isoxazolyl group, a pyridinyl group, a pyrazinylgroup, a pyrimidinyl group, a pyridazinyl group, an isoindolyl group, anindolyl group, an indazolyl group, a purinyl group, a quinolinyl group,an isoquinolinyl group, a benzoquinolinyl group, a phthalazinyl group, anaphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, acinnolinyl group, a carbazolyl group, a phenanthrolinyl group, aphenanthridinyl group, a benzoimidazolyl group, a benzofuranyl group, abenzothiophenyl group, an isobenzothiazolyl group, a benzoxazolyl group,an isobenzoxazolyl group, a triazolyl group, a tetrazolyl group, anoxadiazolyl group, a triazinyl group, a dibenzofuranyl group, adibenzothiophenyl group, a dinaphthofuranyl group, a dinaphthothiophenylgroup, a benzocarbazolyl group, a dibenzocarbazolyl group, animidazopyridinyl group, and an imidazopyrimidinyl group, eachsubstituted with at least one selected from deuterium, —F, —Cl, —Br, —I,a hydroxyl group, a cyano group, a nitro group, an amino group, anamidino group, a hydrazine group, a hydrazone group, a carboxylic acidgroup or a salt thereof, a sulfonic acid group or a salt thereof, aphosphoric acid group or a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀alkoxy group, a phenyl group, a naphthyl group, a fluorenyl group, aphenanthrenyl group, an anthracenyl group, a fluoranthenyl group, atriphenylenyl group, a pyrenyl group, a chrysenyl group, a pyrrolylgroup, a thiophenyl group, a furanyl group, an imidazolyl group, apyrazolyl group, a thiazolyl group, an isothiazolyl group, an oxazolylgroup, an isoxazolyl group, a pyridinyl group, a pyrazinyl group, apyrimidinyl group, a pyridazinyl group, an isoindolyl group, an indolylgroup, an indazolyl group, a purinyl group, a quinolinyl group, anisoquinolinyl group, a benzoquinolinyl group, a phthalazinyl group, anaphthyridinyl group, a quinoxalinyl group, a quinazolinyl group, acinnolinyl group, a carbazolyl group, a phenanthrolinyl group, aphenanthridinyl group, a benzoimidazolyl group, a benzofuranyl group, abenzothiophenyl group, an isobenzothiazolyl group, a benzoxazolyl group,an isobenzoxazolyl group, a triazolyl group, a tetrazolyl group, anoxadiazolyl group, a triazinyl group, a dibenzofuranyl group, adibenzothiophenyl group, a dinaphthofuranyl group, a dinaphthothiophenylgroup, a benzocarbazolyl group, a dibenzocarbazolyl group, animidazopyridinyl group, an imidazopyrimidinyl group, and—Si(Q₃₁)(Q₃₂)(Q₃₃); and —Si(Q₁)(Q₂)(Q₃), —P(═O)(Q₄)(Q₅), —S(═O)(Q₆), and—S(═O)₂(Q₇), wherein Q₁ to Q₇ and Q₃₁ to Q₃₃ are each independentlyselected from hydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, acyano group, a nitro group, an amino group, an amidino group, ahydrazine group, a hydrazone group, a carboxylic acid group or a saltthereof, a sulfonic acid group or a salt thereof, a phosphoric acidgroup or a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀ alkoxy group, aphenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, and acarbazolyl group.
 7. The condensed cyclic compound of claim 1, whereinwhen at least one of b11 and b21 is not 0, R₁₁ and R₂₁ are eachindependently selected from: hydrogen, deuterium, —F, —Cl, —Br, —I, ahydroxyl group, a cyano group, a nitro group, an amino group, an amidinogroup, a hydrazine group, a hydrazone group, a carboxylic acid group ora salt thereof, a sulfonic acid group or a salt thereof, a phosphoricacid group or a salt thereof, a C₁-C₂₀ alkyl group, and a C₁-C₂₀ alkoxygroup; a phenyl group, a naphthyl group, a fluorenyl group, aspiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group,a phenanthrenyl group, an anthracenyl group, a pyrenyl group, achrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinylgroup, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group,a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, aphenanthrolinyl group, a phenanthridinyl group, a benzofuranyl group, abenzothiophenyl group, a dibenzofuranyl group, a dibenzothiophenylgroup, a dinaphthofuranyl group, a dinaphthothiophenyl group, atriazinyl group, a benzocarbazolyl group, and a dibenzocarbazolyl group;and a phenyl group, a naphthyl group, a fluorenyl group, aspiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group,a phenanthrenyl group, an anthracenyl group, a pyrenyl group, achrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinylgroup, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group,a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, aphenanthrolinyl group, a phenanthridinyl group, a benzofuranyl group, abenzothiophenyl group, a dibenzofuranyl group, a dibenzothiophenylgroup, a dinaphthofuranyl group, a dinaphthothiophenyl group, atriazinyl group, a benzocarbazolyl group, and a dibenzocarbazolyl group,each substituted with at least one selected from deuterium, —F, —Cl,—Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group,an amidino group, a hydrazine group, a hydrazone group, a carboxylicacid group or a salt thereof, a sulfonic acid group or a salt thereof, aphosphoric acid group or a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀alkoxy group, a phenyl group, a naphthyl group, a fluorenyl group, aspiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group,a phenanthrenyl group, an anthracenyl group, a pyrenyl group, achrysenyl group, a pyridinyl group, a pyrazinyl group, a pyrimidinylgroup, a pyridazinyl group, a quinolinyl group, an isoquinolinyl group,a quinoxalinyl group, a quinazolinyl group, a carbazolyl group, abenzofuranyl group, a benzothiophenyl group, a triazinyl group, abenzocarbazolyl group, a dibenzocarbazolyl group, and—Si(Q₃₁)(Q₃₂)(Q₃₃); and Si(Q₁)(Q₂)(Q₃), —P(═O)(Q₄)(Q₅), —S(═O)(Q₆), and—S(═O)₂(Q₇), wherein Q₁ to Q₇ and Q₃₁ to Q₃₃ are each independentlyselected from hydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, acyano group, a nitro group, an amino group, an amidino group, ahydrazine group, a hydrazone group, a carboxylic acid group or a saltthereof, a sulfonic acid group or a salt thereof, a phosphoric acidgroup or a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀ alkoxy group, aphenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, a quinolinyl group, an isoquinolinyl group, a quinoxalinyl group,a quinazolinyl group, a carbazolyl group and a triazinyl group.
 8. Thecondensed cyclic compound of claim 1, wherein when at least one of b11and b21 is not 0, R₁₁ and R₂₁ are each independently selected fromhydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group,a nitro group, an amino group, an amidino group, a hydrazine group, ahydrazone group, a carboxylic acid group or a salt thereof, a sulfonicacid group or a salt thereof, a phosphoric acid group or a salt thereof,a C₁-C₂₀ alkyl group, a C₁-C₂₀ alkoxy group, and groups represented byany one selected from Formulae 5-1 to 5-44:

wherein in Formulae 5-1 to 5-44, Y₃₁ is selected from O, S, C(Z₃₄)(Z₃₅),and N(Z₃₆); Z₃₁ to Z₃₆ are each independently selected from: hydrogen,deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine group, a hydrazonegroup, a carboxylic acid group or a salt thereof, a sulfonic acid groupor a salt thereof, a phosphoric acid group or a salt thereof, a C₁-C₂₀alkyl group, and a C₁-C₂₀ alkoxy group; a C₁-C₂₀ alkyl group and aC₁-C₂₀ alkoxy group, each substituted with at least one selected fromdeuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine group, a hydrazonegroup, a carboxylic acid group or a salt thereof, a sulfonic acid groupor a salt thereof, and a phosphoric acid group or a salt thereof; aphenyl group, a naphthyl group, a fluorenyl group, a spiro-fluorenylgroup, a benzofluorenyl group, a dibenzofluorenyl group, a phenanthrenylgroup, an anthracenyl group, a pyrenyl group, a chrysenyl group, acarbazolyl group, a benzocarbazolyl group, a dibenzocarbazolyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, an isoindolyl group, an indolyl group, an indazolyl group, apurinyl group, a quinolinyl group, an isoquinolinyl group, abenzoquinolinyl group, a quinoxalinyl group, a quinazolinyl group, acinnolinyl group, a carbazolyl group, a phenanthrolinyl group, abenzoimidazolyl group, a benzofuranyl group, a benzothiophenyl group, anisobenzothiazolyl group, a benzoxazolyl group, an isobenzoxazolyl group,a triazolyl group, a tetrazolyl group, an oxadiazolyl group, a triazinylgroup, a dibenzofuranyl group, a dibenzothiophenyl group, abenzocarbazolyl group, a dibenzocarbazolyl group, an imidazopyridinylgroup, and an imidazopyrimidinyl group; a phenyl group, a naphthylgroup, a fluorenyl group, a spiro-fluorenyl group, a benzofluorenylgroup, a dibenzofluorenyl group, a phenanthrenyl group, an anthracenylgroup, a pyrenyl group, a chrysenyl group, a carbazolyl group, abenzocarbazolyl group, a dibenzocarbazolyl group, a pyridinyl group, apyrazinyl group, a pyrimidinyl group, a pyridazinyl group, an isoindolylgroup, an indolyl group, an indazolyl group, a purinyl group, aquinolinyl group, an isoquinolinyl group, a benzoquinolinyl group, aquinoxalinyl group, a quinazolinyl group, a cinnolinyl group, acarbazolyl group, a phenanthrolinyl group, a benzoimidazolyl group, abenzofuranyl group, a benzothiophenyl group, an isobenzothiazolyl group,a benzoxazolyl group, an isobenzoxazolyl group, a triazolyl group, atetrazolyl group, an oxadiazolyl group, a triazinyl group, adibenzofuranyl group, a dibenzothiophenyl group, a benzocarbazolylgroup, a dibenzocarbazolyl group, an imidazopyridinyl group, and animidazopyrimidinyl group, each substituted with at least one selectedfrom deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, anitro group, an amino group, an amidino group, a hydrazine group, ahydrazone group, a carboxylic acid group or a salt thereof, a sulfonicacid group or a salt thereof, a phosphoric acid group or a salt thereof,a C₁-C₂₀ alkyl group, a C₁-C₂₀ alkoxy group, a phenyl group, and anaphthyl group; and —Si(Q₃₁)(Q₃₂)(Q₃₃), wherein Q₄ to Q₇ and Q₃₁ to Q₃₃are each independently selected from hydrogen, deuterium, —F, —Cl, —Br,—I, a hydroxyl group, a cyano group, a nitro group, an amino group, anamidino group, a hydrazine group, a hydrazone group, a carboxylic acidgroup or a salt thereof, a sulfonic acid group or a salt thereof, aphosphoric acid group or a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀alkoxy group, a phenyl group, a naphthyl group, a fluorenyl group, aspiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group,a phenanthrenyl group, an anthracenyl group, a pyrenyl group, achrysenyl group, and a carbazolyl group; e1 is an integer selected from1 to 5, e2 is an integer selected from 1 to 7, e3 is an integer selectedfrom 1 to 3, e4 is an integer selected from 1 to 4, e5 is an integerselected from 1 and 2, e6 is an integer selected from 1 to 6, e7 is aninteger selected from 1 to 9, and * is a binding site to a neighboringatom.
 9. The condensed cyclic compound of claim 8, wherein when R₁₁ andR₂₁ are each independently represented by any one selected from Formulae5-1 to 5-44, Z₃₁ to Z₃₆ in Formulae 5-1 to 5-44 are each independentlyselected from hydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, acyano group, a nitro group, an amino group, an amidino group, ahydrazine group, a hydrazone group, a C₁-C₂₀ alkyl group, a C₁-C₂₀alkoxy group, a phenyl group, a naphthyl group, a fluorenyl group, aspiro-fluorenyl group, a benzofluorenyl group, a dibenzofluorenyl group,a phenanthrenyl group, an anthracenyl group, a pyrenyl group, achrysenyl group, a carbazolyl group, a benzocarbazolyl group, adibenzocarbazolyl group, a pyridinyl group, a pyrazinyl group, apyrimidinyl group, and a pyridazinyl group.
 10. The condensed cycliccompound of claim 1, wherein when at least one of b11 and b21 is not 0,R₁₁ and R₂₁ are each independently selected from hydrogen, deuterium,—F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, anamino group, an amidino group, a hydrazine group, a hydrazone group, acarboxylic acid group or a salt thereof, a sulfonic acid group or a saltthereof, a phosphoric acid group or a salt thereof, a C₁-C₂₀ alkylgroup, a C₁-C₂₀ alkoxy group, and a group represented by any oneselected from Formulae 6-1 to 6-42:

wherein * in Formulae 6-1 to 6-42 is a binding site to a neighboringatom.
 11. The condensed cyclic compound of claim 1, wherein when atleast one of b12, b13, b22 and b23 is not 0, R₁₂, R₁₃, R₂₂ and R₂₃ areeach independently selected from hydrogen, deuterium, —F, —Cl, —Br, —I,a hydroxyl group, a cyano group, a nitro group, an amino group, anamidino group, a hydrazine group, a hydrazone group, a carboxylic acidgroup or a salt thereof, a sulfonic acid group or a salt thereof, aphosphoric acid group or a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀alkoxy group, and groups represented by any one selected from Formulae7-1 to 7-44:

wherein in Formulae 7-1 to 7-44, Z₁₁ to Z₁₆ are each independentlyselected from hydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, acyano group, a hydrazine group, a hydrazone group, a carboxylic acidgroup or a salt thereof, a sulfonic acid group or a salt thereof, aphosphoric acid group or a salt thereof, a C₁-C₂₀ alkyl group, a C₁-C₂₀alkoxy group, a phenyl group, a pentalenyl group, an indenyl group, anaphthyl group, an azulenyl group, a heptalenyl group, an indacenylgroup, an acenaphthyl group, a fluorenyl group, a spiro-fluorenyl group,a benzofluorenyl group, a dibenzofluorenyl group, a phenalenyl group, aphenanthrenyl group, an anthracenyl group, a fluoranthenyl group, atriphenylenyl group, a pyrenyl group, a chrysenyl group, a naphthacenylgroup, a picenyl group, a perylenyl group, a pentaphenyl group, ahexacenyl group, a pentacenyl group, a rubicenyl group, a coronenylgroup, an ovalenyl group, a pyrrolyl group, a thiophenyl group, afuranyl group, an imidazolyl group, a pyrazolyl group, a thiazolylgroup, an isothiazolyl group, an oxazolyl group, an isoxazolyl group, apyridinyl group, a pyrazinyl group, a pyrimidinyl group, a pyridazinylgroup, an isoindolyl group, an indolyl group, an indazolyl group, apurinyl group, a quinolinyl group, an isoquinolinyl group, abenzoquinolinyl group, a phthalazinyl group, a naphthyridinyl group, aquinoxalinyl group, a quinazolinyl group, a cinnolinyl group, acarbazolyl group, phenanthridinyl, acridinyl, phenanthrolinyl,phenazinyl, a benzoimidazolyl group, a benzofuranyl group, abenzothiophenyl group, an isobenzothiazolyl group, a benzoxazolyl group,an isobenzoxazolyl group, a triazolyl group, a tetrazolyl group, anoxadiazolyl group, a triazinyl group, a dibenzofuranyl group, adibenzothiophenyl group, a benzocarbazolyl group, a dibenzocarbazolylgroup, an imidazopyridinyl group and an imidazopyrimidinyl group, and *indicates a binding site to a neighboring atom.
 12. The condensed cycliccompound of claim 1, wherein when at least one of b12, b13, b22 and b23is not 0, R₁₂, R₁₃, R₂₂, and R₂₃ are each independently selected fromhydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group,a nitro group, an amino group, an amidino group, a hydrazine group, ahydrazone group, a carboxylic acid group or a salt thereof, a sulfonicacid group or a salt thereof, a phosphoric acid group or a salt thereof,a C₁-C₂₀ alkyl group, a C₁-C₂₀ alkoxy group, a pyridinyl group, apyrazinyl group, a pyrimidinyl group, a pyridazinyl group, an isoindolylgroup, an indolyl group, an indazolyl group, a purinyl group, aquinolinyl group, an isoquinolinyl group, a benzoquinolinyl group, aquinoxalinyl group, a quinazolinyl group, a triazolyl group, and atriazinyl group.
 13. The condensed cyclic compound of claim 1, whereinthe condensed cyclic compound is represented by Formula 1-1; a11 isselected from 0, 1, and 2; and each of a12 and a13 is
 0. 14. Thecondensed cyclic compound of claim 1, wherein the condensed cycliccompound is represented by any one selected from Formulae 1-1A and 1-1B:

wherein descriptions of L₁₁, a11, R₁₁ to R₁₃, n12, and n13 in Formulae1-1A and 1-1B are the same as in Formula 1-1.
 15. The condensed cycliccompound of claim 1, wherein the condensed cyclic compound isrepresented by any one selected from Formulae 1-1C and 1-1D:

wherein L₁₁ in Formulae 1-1C and 1-1D is represented by one selectedfrom Formulae 4-1 to 4-8:

a11 is selected from 0, 1, and 2, and when a11 is 2, 2 L₁₁(s) areidentical to or different from each other; and R₁₁ is represented by oneselected from Formulae 6-1 to 6-42:

wherein each of * and *′ in Formulae 4-1 to 4-8 and Formulae 6-1 to 6-42is a binding site to a neighboring atom.
 16. A condensed cyclic compoundrepresented by one selected from Formulae 1-1 and 1-2:

wherein in Formulae 1-1 and 1-2, X₁ and X₂ are each independently O orS; L₁₁ to L₁₃ and L₂₁ to L₂₃ are each independently selected from asubstituted or unsubstituted C₃-C₁₀ cycloalkylene group, a substitutedor unsubstituted C₁-C₁₀ heterocycloalkylene group, a substituted orunsubstituted C₃-C₁₀ cycloalkenylene group, a substituted orunsubstituted C₁-C₁₀ heterocycloalkenylene group, a substituted orunsubstituted C₆-C₆₀ arylene group, a substituted or unsubstitutedC₁-C₆₀ heteroarylene group, a substituted or unsubstituted divalentnon-aromatic condensed polycyclic group, and a substituted orunsubstituted divalent non-aromatic condensed heteropolycyclic group;a11 to a13 and a21 to a23 are each independently selected from 0, 1, 2,and 3, and when a11 is 2 or more, 2 or more L₁₁(s) are identical to ordifferent from each other, and when a12 is 2 or more, 2 or more L₁₂(s)are identical to or different from each other, and when a13 is 2 ormore, 2 or more L₁₃(s) are identical to or different from each other,and when a21 is 2 or more, 2 or more L₂₁(s) are identical to ordifferent from each other, and when a22 is 2 or more, 2 or more L₂₂(s)are identical to or different from each other, and when a23 is 2 ormore, 2 or more L₂₃(s) are identical to or different from each other;R₁₁ to R₁₃ and R₂₁ to R₂₃ are each independently selected from hydrogen,deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine group, a hydrazonegroup, a carboxylic acid group or a salt thereof, a sulfonic acid groupor a salt thereof, a phosphoric acid group or a salt thereof, asubstituted or unsubstituted C₁-C₆₀ alkyl group, a substituted orunsubstituted C₂-C₆₀ alkenyl group, a substituted or unsubstitutedC₂-C₆₀ alkynyl group, a substituted or unsubstituted C₁-C₆₀ alkoxygroup, a substituted or unsubstituted C₃-C₁₀ cycloalkyl group, asubstituted or unsubstituted C₁-C₁₀ heterocycloalkyl group, asubstituted or unsubstituted C₃-C₁₀ cycloalkenyl group, a substituted orunsubstituted C₁-C₁₀ heterocycloalkenyl group, a substituted orunsubstituted C₆-C₆₀ aryl group, a substituted or unsubstituted C₆-C₆₀aryloxy group, a substituted or unsubstituted C₆-C₆₀ arylthio group, asubstituted or unsubstituted C₁-C₆₀ heteroaryl group, a substituted orunsubstituted monovalent non-aromatic condensed polycyclic group, asubstituted or unsubstituted monovalent non-aromatic condensedheteropolycyclic group, —Si(Q₁)(Q₂)(Q₃), —P(═O)(Q₄)(Q₅), —S(═O)(Q₆), and—S(═O)₂(Q₇); b11 to b13 and b21 to b23 are each independently selectedfrom 0, 1, 2, and 3, and when b11 is 2 or more, 2 or more R₁₁(s) areidentical to or different from each other, and when b12 is 2 or more, 2or more R₁₂(s) are identical to or different from each other, and whenb13 is 2 or more, 2 or more R₁₃(s) are identical to or different fromeach other, and when b21 is 2 or more, 2 or more R₂₁(s) are identical toor different from each other, and when b22 is 2 or more, 2 or moreR₂₂(s) are identical to or different from each other, and when b23 is 2or more, 2 or more R₂₃(s) are identical to or different from each other;and n12, n13, n22, and n23 are each independently selected from 0, 1, 2,3, and 4, wherein the compound represented by Formula 1-1 is neitherCompound A nor Compound B, and the compound represented by Formula 1-2is not Compound D:

and wherein at least one substituent of the substituted C₃-C₁₀cycloalkylene group, substituted C₁-C₁₀ heterocycloalkylene group,substituted C₃-C₁₀ cycloalkenylene group, substituted C₁-C₁₀heterocycloalkenylene group, substituted C₆-C₆₀ arylene group,substituted C₁-C₆₀ heteroarylene group, substituted divalentnon-aromatic condensed polycyclic group, substituted divalentnon-aromatic condensed heteropolycyclic group, substituted C₁-C₆₀ alkylgroup, substituted C₂-C₆₀ alkenyl group, substituted C₂-C₆₀ alkynylgroup, substituted C₁-C₆₀ alkoxy group, substituted C₃-C₁₀ cycloalkylgroup, substituted C₁-C₁₀ heterocycloalkyl group, substituted C₃-C₁₀cycloalkenyl group, substituted C₁-C₁₀ heterocycloalkenyl group,substituted C₆-C₆₀ aryl group, substituted C₆-C₆₀ aryloxy group,substituted C₆-C₆₀ arylthio group, substituted C₁-C₆₀ heteroaryl group,substituted monovalent non-aromatic condensed polycyclic group andsubstituted monovalent non-aromatic condensed heteropolycyclic group isselected from: deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyanogroup, a nitro group, an amino group, an amidino group, a hydrazinegroup, a hydrazone group, a carboxylic acid group or a salt thereof, asulfonic acid group or a salt thereof, a phosphoric acid group or a saltthereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynylgroup, and a C₁-C₆₀ alkoxy group; a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenylgroup, a C₂-C₆₀ alkynyl group, and a C₁-C₆₀ alkoxy group, eachsubstituted with at least one selected from deuterium, —F, —Cl, —Br, —I,a hydroxyl group, a cyano group, a nitro group, an amino group, anamidino group, a hydrazine group, a hydrazone group, a carboxylic acidgroup or a salt thereof, a sulfonic acid group or a salt thereof, aphosphoric acid group or a salt thereof, a C₃-C₁₀ cycloalkyl group, aC₁-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenyl group, a C₁-C₁₀heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀ aryloxy group, aC₆-C₆₀ arylthio group, a C₁-C₆₀ heteroaryl group, a monovalentnon-aromatic condensed polycyclic group, a monovalent non-aromaticcondensed heteropolycyclic group, —Si(Q₁₁)(Q₁₂)(Q₁₃), —B(Q₁₄)(Q₁₅), and—N(Q₁₆)(Q₁₇); a C₃-C₁₀ cycloalkyl group, a C₁-C₁₀ heterocycloalkylgroup, a C₃-C₁₀ cycloalkenyl group, a C₁-C₁₀ heterocycloalkenyl group, aC₆-C₆₀ aryl group, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, aC₁-C₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclicgroup, and a monovalent non-aromatic condensed heteropolycyclic group; aC₃-C₁₀ cycloalkyl group, a C₁-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₁-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic condensed heteropolycyclic group, eachsubstituted with at least one selected from deuterium, —F, —Cl, —Br, —I,a hydroxyl group, a cyano group, a nitro group, an amino group, anamidino group, a hydrazine group, a hydrazone group, a carboxylic acidgroup or a salt thereof, a sulfonic acid group or a salt thereof, aphosphoric acid group or a salt thereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀alkenyl group, a C₂-C₆₀ alkynyl group, a C₁-C₆₀ alkoxy group, a C₃-C₁₀cycloalkyl group, a C₁-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenylgroup, a C₁-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀ heteroaryl group, amonovalent non-aromatic condensed polycyclic group, a monovalentnon-aromatic condensed heteropolycyclic group, —Si(Q₂₁)(Q₂₂)(Q₂₃),—B(Q₂₄)(Q₂₅), and —N(Q₂₆)(Q₂₇); and —Si(Q₃₁)(Q₃₂)(Q₃₃), —B(Q₃₄)(Q₃₅),and —N(Q₃₆)(Q₃₇), wherein Q₁ to Q₇, Q₁₁ to Q₁₇, Q₂₁ to Q₂₇ and Q₃₁ toQ₃₇ are each independently selected from hydrogen, deuterium, —F, —Cl,—Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group,an amidino group, a hydrazine group, a hydrazone group, a carboxylicacid group or a salt thereof, a sulfonic acid group or a salt thereof, aphosphoric acid group or a salt thereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀alkenyl group, a C₂-C₆₀ alkynyl group, a C₁-C₆₀ alkoxy group, a C₃-C₁₀cycloalkyl group, a C₁-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenylgroup, a C₁-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic condensed heteropolycyclic group, whereinthe condensed cyclic compound is one selected from Compounds 1 to 110:


17. An organic light-emitting device comprising: a first electrode; asecond electrode facing the first electrode; and an organic layerbetween the first electrode and the second electrode, the organic layercomprising an emission layer, wherein the organic layer comprises atleast one condensed cyclic compound represented by one selected fromFormulae 1-1 and 1-2:

wherein in Formulae 1-1 and 1-2, X₁ and X₂ are each independently O orS; L₁₁ to L₁₃ and L₂₁ to L₂₃ are each independently selected from asubstituted or unsubstituted C₃-C₁₀ cycloalkylene group, a substitutedor unsubstituted C₁-C₁₀ heterocycloalkylene group, a substituted orunsubstituted C₃-C₁₀ cycloalkenylene group, a substituted orunsubstituted C₁-C₁₀ heterocycloalkenylene group, a substituted orunsubstituted C₆-C₆₀ arylene group, a substituted or unsubstitutedC₁-C₆₀ heteroarylene group, a substituted or unsubstituted divalentnon-aromatic condensed polycyclic group, and a substituted orunsubstituted divalent non-aromatic condensed heteropolycyclic group;a11 to a13 and a21 to a23 are each independently selected from 0, 1, 2,and 3, and when a11 is 2 or more, 2 or more L₁₁(s) are identical to ordifferent from each other, and when a12 is 2 or more, 2 or more L₁₂(s)are identical to or different from each other, and when a13 is 2 ormore, 2 or more L₁₃(s) are identical to or different from each other,and when a21 is 2 or more, 2 or more L₂₁(s) are identical to ordifferent from each other, and when a22 is 2 or more, 2 or more L₂₂(s)are identical to or different from each other, and when a23 is 2 ormore, 2 or more L₂₃(s) are identical to or different from each other;R₁₁ to R₁₃ and R₂₁ to R₂₃ are each independently selected from hydrogen,deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitrogroup, an amino group, an amidino group, a hydrazine group, a hydrazonegroup, a carboxylic acid group or a salt thereof, a sulfonic acid groupor a salt thereof, a phosphoric acid group or a salt thereof, asubstituted or unsubstituted C₁-C₆₀ alkyl group, a substituted orunsubstituted C₂-C₆₀ alkenyl group, a substituted or unsubstitutedC₂-C₆₀ alkynyl group, a substituted or unsubstituted C₁-C₆₀ alkoxygroup, a substituted or unsubstituted C₃-C₁₀ cycloalkyl group, asubstituted or unsubstituted C₁-C₁₀ heterocycloalkyl group, asubstituted or unsubstituted C₃-C₁₀ cycloalkenyl group, a substituted orunsubstituted C₁-C₁₀ heterocycloalkenyl group, a substituted orunsubstituted C₆-C₆₀ aryl group, a substituted or unsubstituted C₆-C₆₀aryloxy group, a substituted or unsubstituted C₆-C₆₀ arylthio group, asubstituted or unsubstituted C₁-C₆₀ heteroaryl group, a substituted orunsubstituted monovalent non-aromatic condensed polycyclic group, asubstituted or unsubstituted monovalent non-aromatic condensedheteropolycyclic group, —Si(Q₁)(Q₂)(Q₃), —P(═O)(Q₄)(Q₅), —S(═O)(Q₆), and—S(═O)₂(Q₇); b11 to b13 and b21 to b23 are each independently selectedfrom 0, 1, 2, and 3, and when b11 is 2 or more, 2 or more R₁₁(s) areidentical to or different from each other, and when b12 is 2 or more, 2or more R₁₂(s) are identical to or different from each other, and whenb13 is 2 or more, 2 or more R₁₃(s) are identical to or different fromeach other, and when b21 is 2 or more, 2 or more R₂₁(s) are identical toor different from each other, and when b22 is 2 or more, 2 or moreR₂₂(s) are identical to or different from each other, and when b23 is 2or more, 2 or more R₂₃(s) are identical to or different from each other;and n12, n13, n22, and n23 are each independently selected from 0, 1, 2,3, and 4, wherein the compound represented by Formula 1-1 is neitherCompound A nor Compound B, and the compound represented by Formula 1-2is not Compound D:

and wherein at least one substituent of the substituted C₃-C₁₀cycloalkylene group, substituted C₁-C₁₀ heterocycloalkylene group,substituted C₃-C₁₀ cycloalkenylene group, substituted C₁-C₁₀heterocycloalkenylene group, substituted C₆-C₆₀ arylene group,substituted C₁-C₆₀ heteroarylene group, substituted divalentnon-aromatic condensed polycyclic group, substituted divalentnon-aromatic condensed heteropolycyclic group, substituted C₁-C₆₀ alkylgroup, substituted C₂-C₆₀ alkenyl group, substituted C₂-C₆₀ alkynylgroup, substituted C₁-C₆₀ alkoxy group, substituted C₃-C₁₀ cycloalkylgroup, substituted C₁-C₁₀ heterocycloalkyl group, substituted C₃-C₁₀cycloalkenyl group, substituted C₁-C₁₀ heterocycloalkenyl group,substituted C₆-C₆₀ aryl group, substituted C₆-C₆₀ aryloxy group,substituted C₆-C₆₀ arylthio group, substituted C₁-C₆₀ heteroaryl group,substituted monovalent non-aromatic condensed polycyclic group andsubstituted monovalent non-aromatic condensed heteropolycyclic group isselected from: deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyanogroup, a nitro group, an amino group, an amidino group, a hydrazinegroup, a hydrazone group, a carboxylic acid group or a salt thereof, asulfonic acid group or a salt thereof, a phosphoric acid group or a saltthereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenyl group, a C₂-C₆₀ alkynylgroup, and a C₁-C₆₀ alkoxy group; a C₁-C₆₀ alkyl group, a C₂-C₆₀ alkenylgroup, a C₂-C₆₀ alkynyl group, and a C₁-C₆₀ alkoxy group, eachsubstituted with at least one selected from deuterium, —F, —Cl, —Br, —I,a hydroxyl group, a cyano group, a nitro group, an amino group, anamidino group, a hydrazine group, a hydrazone group, a carboxylic acidgroup or a salt thereof, a sulfonic acid group or a salt thereof, aphosphoric acid group or a salt thereof, a C₃-C₁₀ cycloalkyl group, aC₁-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenyl group, a C₁-C₁₀heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀ aryloxy group, aC₆-C₆₀ arylthio group, a C₁-C₆₀ heteroaryl group, a monovalentnon-aromatic condensed polycyclic group, a monovalent non-aromaticcondensed heteropolycyclic group, —Si(Q₁₁)(Q₁₂)(Q₁₃), —B(Q₁₄)(Q₁₅), and—N(Q₁₆)(Q₁₇); a C₃-C₁₀ cycloalkyl group, a C₁-C₁₀ heterocycloalkylgroup, a C₃-C₁₀ cycloalkenyl group, a C₁-C₁₀ heterocycloalkenyl group, aC₆-C₆₀ aryl group, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, aC₁-C₆₀ heteroaryl group, a monovalent non-aromatic condensed polycyclicgroup, and a monovalent non-aromatic condensed heteropolycyclic group; aC₃-C₁₀ cycloalkyl group, a C₁-C₁₀ heterocycloalkyl group, a C₃-C₁₀cycloalkenyl group, a C₁-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ arylgroup, a C₆-C₆₀ aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic condensed heteropolycyclic group, eachsubstituted with at least one selected from deuterium, —F, —Cl, —Br, —I,a hydroxyl group, a cyano group, a nitro group, an amino group, anamidino group, a hydrazine group, a hydrazone group, a carboxylic acidgroup or a salt thereof, a sulfonic acid group or a salt thereof, aphosphoric acid group or a salt thereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀alkenyl group, a C₂-C₆₀ alkynyl group, a C₁-C₆₀ alkoxy group, a C₃-C₁₀cycloalkyl group, a C₁-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenylgroup, a C₁-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₆-C₆₀aryloxy group, a C₆-C₆₀ arylthio group, a C₁-C₆₀ heteroaryl group, amonovalent non-aromatic condensed polycyclic group, a monovalentnon-aromatic condensed heteropolycyclic group, —Si(Q₂₁)(Q₂₂)(Q₂₃),—B(Q₂₄)(Q₂₅), and —N(Q₂₆)(Q₂₇); and —Si(Q₃₁)(Q₃₂)(Q₃₃), —B(Q₃₄)(Q₃₅),and —N(Q₃₆)(Q₃₇), wherein Q₁ to Q₇, Q₁₁ to Q₁₇, Q₂₁ to Q₂₇ and Q₃₁ toQ₃₇ are each independently selected from hydrogen, deuterium, —F, —Cl,—Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group,an amidino group, a hydrazine group, a hydrazone group, a carboxylicacid group or a salt thereof, a sulfonic acid group or a salt thereof, aphosphoric acid group or a salt thereof, a C₁-C₆₀ alkyl group, a C₂-C₆₀alkenyl group, a C₂-C₆₀ alkynyl group, a C₁-C₆₀ alkoxy group, a C₃-C₁₀cycloalkyl group, a C₁-C₁₀ heterocycloalkyl group, a C₃-C₁₀ cycloalkenylgroup, a C₁-C₁₀ heterocycloalkenyl group, a C₆-C₆₀ aryl group, a C₁-C₆₀heteroaryl group, a monovalent non-aromatic condensed polycyclic group,and a monovalent non-aromatic condensed heteropolycyclic group.
 18. Theorganic light-emitting device of claim 17, wherein the first electrodeis an anode, the second electrode is a cathode, the organic layercomprises: i) a hole transport region between the first electrode andthe emission layer, the hole transport region comprising at least oneselected from a hole injection layer, a hole transport layer, a bufferlayer, and an electron blocking layer and ii) an electron transportregion between the emission layer and the second electrode, the electrontransport region comprising at least one selected from a hole blockinglayer, an electron transport layer, and an electron injection layer. 19.The organic light-emitting device of claim 18, wherein the electrontransport region comprises the condensed cyclic compound represented byone selected from Formulae 1-1 and 1-2.
 20. The organic light-emittingdevice of claim 18, wherein the emission layer comprises the condensedcyclic compound represented by one selected from Formulae 1-1 and 1-2.